Løs 7/64a^2+[(1/2a+1/3)(1/2a-frac{1}{3})-frac{1}{2}a(4a-frac{3}{4})+frac{7}{4}a^2-frac{8}{9}]^2-frac{1}{4}a

$$\frac { 7 } { 64 } a ^ { 2 } + [ ( \frac { 1 } { 2 } a + \frac { 1 } { 3 } ) ( \frac { 1 } { 2 } a - \frac { 1 } { 3 } ) - \frac { 1 } { 2 } a ( 4 a - \frac { 3 } { 4 } ) + \frac { 7 } { 4 } a ^ { 2 } - \frac { 8 } { 9 } ] ^ { 2 } - \frac { 1 } { 4 } a$$

Evaluer

$$\frac{\left(a-2\right)^{2}}{4}$$

Løsningstrinn

Vurder \left(\frac{1}{2}a+\frac{1}{3}\right)\left(\frac{1}{2}a-\frac{1}{3}\right). Multiplikasjon kan forvandles til differansen av kvadratene ved hjelp av regelen: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}. Kvadrer \frac{1}{3}.

$$\frac{7}{64}a^{2}+\left(\left(\frac{1}{2}a\right)^{2}-\frac{1}{9}-\frac{1}{2}a\left(4a-\frac{3}{4}\right)+\frac{7}{4}a^{2}-\frac{8}{9}\right)^{2}-\frac{1}{4}a$$

Utvid \left(\frac{1}{2}a\right)^{2}.

$$\frac{7}{64}a^{2}+\left(\left(\frac{1}{2}\right)^{2}a^{2}-\frac{1}{9}-\frac{1}{2}a\left(4a-\frac{3}{4}\right)+\frac{7}{4}a^{2}-\frac{8}{9}\right)^{2}-\frac{1}{4}a$$

Regn ut \frac{1}{2} opphøyd i 2 og få \frac{1}{4}.

$$\frac{7}{64}a^{2}+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\frac{1}{2}a\left(4a-\frac{3}{4}\right)+\frac{7}{4}a^{2}-\frac{8}{9}\right)^{2}-\frac{1}{4}a$$

Kvadrer \frac{1}{4}a^{2}-\frac{1}{9}-\frac{1}{2}a\left(4a-\frac{3}{4}\right)+\frac{7}{4}a^{2}-\frac{8}{9}.

$$\frac{7}{64}a^{2}+\frac{7}{2}a^{2}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Du finner den motsatte av 2a^{2}-\frac{3}{8}a ved å finne den motsatte av hvert ledd.

$$\frac{7}{64}a^{2}+\frac{7}{2}a^{2}\left(\frac{1}{4}a^{2}-\frac{1}{9}-2a^{2}+\frac{3}{8}a\right)+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{1}{4}a^{2} og -2a^{2} for å få -\frac{7}{4}a^{2}.

$$\frac{7}{64}a^{2}+\frac{7}{2}a^{2}\left(-\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a\right)+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Bruk den distributive lov til å multiplisere \frac{7}{2}a^{2} med -\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a.

$$\frac{7}{64}a^{2}-\frac{49}{8}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Du finner den motsatte av 2a^{2}-\frac{3}{8}a ved å finne den motsatte av hvert ledd.

$$\frac{7}{64}a^{2}-\frac{49}{8}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}+\left(\frac{1}{4}a^{2}-\frac{1}{9}-2a^{2}+\frac{3}{8}a\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{1}{4}a^{2} og -2a^{2} for å få -\frac{7}{4}a^{2}.

$$\frac{7}{64}a^{2}-\frac{49}{8}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}+\left(-\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kvadrer -\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a.

$$\frac{7}{64}a^{2}-\frac{49}{8}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}+\frac{49}{16}a^{4}-\frac{21}{16}a^{3}+\frac{305}{576}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner -\frac{49}{8}a^{4} og \frac{49}{16}a^{4} for å få -\frac{49}{16}a^{4}.

$$\frac{7}{64}a^{2}-\frac{49}{16}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}-\frac{21}{16}a^{3}+\frac{305}{576}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{21}{16}a^{3} og -\frac{21}{16}a^{3} for å få 0.

$$\frac{7}{64}a^{2}-\frac{49}{16}a^{4}-\frac{7}{18}a^{2}+\frac{305}{576}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner -\frac{7}{18}a^{2} og \frac{305}{576}a^{2} for å få \frac{9}{64}a^{2}.

$$\frac{7}{64}a^{2}-\frac{49}{16}a^{4}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner -\frac{49}{16}a^{4} og \frac{49}{16}a^{4} for å få 0.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Du finner den motsatte av 2a^{2}-\frac{3}{8}a ved å finne den motsatte av hvert ledd.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-2a^{2}+\frac{3}{8}a\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{1}{4}a^{2} og -2a^{2} for å få -\frac{7}{4}a^{2}.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}-\frac{16}{9}\left(-\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Bruk den distributive lov til å multiplisere -\frac{16}{9} med -\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{28}{9}a^{2}+\frac{16}{81}-\frac{2}{3}a-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{9}{64}a^{2} og \frac{28}{9}a^{2} for å få \frac{1873}{576}a^{2}.

$$\frac{7}{64}a^{2}+\frac{1873}{576}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{16}{81}-\frac{2}{3}a-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Legg sammen \frac{1}{81} og \frac{16}{81} for å få \frac{17}{81}.

$$\frac{7}{64}a^{2}+\frac{1873}{576}a^{2}-\frac{1}{12}a+\frac{17}{81}-\frac{2}{3}a-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner -\frac{1}{12}a og -\frac{2}{3}a for å få -\frac{3}{4}a.

$$\frac{7}{64}a^{2}+\frac{1873}{576}a^{2}-\frac{3}{4}a+\frac{17}{81}-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{1873}{576}a^{2} og -\frac{28}{9}a^{2} for å få \frac{9}{64}a^{2}.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{3}{4}a+\frac{17}{81}+\frac{64}{81}-\frac{1}{4}a$$

Legg sammen \frac{17}{81} og \frac{64}{81} for å få 1.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{3}{4}a+1-\frac{1}{4}a$$

Kombiner \frac{7}{64}a^{2} og \frac{9}{64}a^{2} for å få \frac{1}{4}a^{2}.

$$\frac{1}{4}a^{2}-\frac{3}{4}a+1-\frac{1}{4}a$$

Kombiner -\frac{3}{4}a og -\frac{1}{4}a for å få -a.

$$\frac{1}{4}a^{2}-a+1$$

Utvid

$$\frac{a^{2}}{4}-a+1$$

Løsningstrinn

Vurder \left(\frac{1}{2}a+\frac{1}{3}\right)\left(\frac{1}{2}a-\frac{1}{3}\right). Multiplikasjon kan forvandles til differansen av kvadratene ved hjelp av regelen: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}. Kvadrer \frac{1}{3}.

$$\frac{7}{64}a^{2}+\left(\left(\frac{1}{2}a\right)^{2}-\frac{1}{9}-\frac{1}{2}a\left(4a-\frac{3}{4}\right)+\frac{7}{4}a^{2}-\frac{8}{9}\right)^{2}-\frac{1}{4}a$$

Utvid \left(\frac{1}{2}a\right)^{2}.

$$\frac{7}{64}a^{2}+\left(\left(\frac{1}{2}\right)^{2}a^{2}-\frac{1}{9}-\frac{1}{2}a\left(4a-\frac{3}{4}\right)+\frac{7}{4}a^{2}-\frac{8}{9}\right)^{2}-\frac{1}{4}a$$

Regn ut \frac{1}{2} opphøyd i 2 og få \frac{1}{4}.

$$\frac{7}{64}a^{2}+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\frac{1}{2}a\left(4a-\frac{3}{4}\right)+\frac{7}{4}a^{2}-\frac{8}{9}\right)^{2}-\frac{1}{4}a$$

Kvadrer \frac{1}{4}a^{2}-\frac{1}{9}-\frac{1}{2}a\left(4a-\frac{3}{4}\right)+\frac{7}{4}a^{2}-\frac{8}{9}.

$$\frac{7}{64}a^{2}+\frac{7}{2}a^{2}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Du finner den motsatte av 2a^{2}-\frac{3}{8}a ved å finne den motsatte av hvert ledd.

$$\frac{7}{64}a^{2}+\frac{7}{2}a^{2}\left(\frac{1}{4}a^{2}-\frac{1}{9}-2a^{2}+\frac{3}{8}a\right)+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{1}{4}a^{2} og -2a^{2} for å få -\frac{7}{4}a^{2}.

$$\frac{7}{64}a^{2}+\frac{7}{2}a^{2}\left(-\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a\right)+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Bruk den distributive lov til å multiplisere \frac{7}{2}a^{2} med -\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a.

$$\frac{7}{64}a^{2}-\frac{49}{8}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}+\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Du finner den motsatte av 2a^{2}-\frac{3}{8}a ved å finne den motsatte av hvert ledd.

$$\frac{7}{64}a^{2}-\frac{49}{8}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}+\left(\frac{1}{4}a^{2}-\frac{1}{9}-2a^{2}+\frac{3}{8}a\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{1}{4}a^{2} og -2a^{2} for å få -\frac{7}{4}a^{2}.

$$\frac{7}{64}a^{2}-\frac{49}{8}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}+\left(-\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a\right)^{2}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kvadrer -\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a.

$$\frac{7}{64}a^{2}-\frac{49}{8}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}+\frac{49}{16}a^{4}-\frac{21}{16}a^{3}+\frac{305}{576}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner -\frac{49}{8}a^{4} og \frac{49}{16}a^{4} for å få -\frac{49}{16}a^{4}.

$$\frac{7}{64}a^{2}-\frac{49}{16}a^{4}-\frac{7}{18}a^{2}+\frac{21}{16}a^{3}-\frac{21}{16}a^{3}+\frac{305}{576}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{21}{16}a^{3} og -\frac{21}{16}a^{3} for å få 0.

$$\frac{7}{64}a^{2}-\frac{49}{16}a^{4}-\frac{7}{18}a^{2}+\frac{305}{576}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner -\frac{7}{18}a^{2} og \frac{305}{576}a^{2} for å få \frac{9}{64}a^{2}.

$$\frac{7}{64}a^{2}-\frac{49}{16}a^{4}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{49}{16}a^{4}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner -\frac{49}{16}a^{4} og \frac{49}{16}a^{4} for å få 0.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-\left(2a^{2}-\frac{3}{8}a\right)\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Du finner den motsatte av 2a^{2}-\frac{3}{8}a ved å finne den motsatte av hvert ledd.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}-\frac{16}{9}\left(\frac{1}{4}a^{2}-\frac{1}{9}-2a^{2}+\frac{3}{8}a\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{1}{4}a^{2} og -2a^{2} for å få -\frac{7}{4}a^{2}.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}-\frac{16}{9}\left(-\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a\right)-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Bruk den distributive lov til å multiplisere -\frac{16}{9} med -\frac{7}{4}a^{2}-\frac{1}{9}+\frac{3}{8}a.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{28}{9}a^{2}+\frac{16}{81}-\frac{2}{3}a-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{9}{64}a^{2} og \frac{28}{9}a^{2} for å få \frac{1873}{576}a^{2}.

$$\frac{7}{64}a^{2}+\frac{1873}{576}a^{2}-\frac{1}{12}a+\frac{1}{81}+\frac{16}{81}-\frac{2}{3}a-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Legg sammen \frac{1}{81} og \frac{16}{81} for å få \frac{17}{81}.

$$\frac{7}{64}a^{2}+\frac{1873}{576}a^{2}-\frac{1}{12}a+\frac{17}{81}-\frac{2}{3}a-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner -\frac{1}{12}a og -\frac{2}{3}a for å få -\frac{3}{4}a.

$$\frac{7}{64}a^{2}+\frac{1873}{576}a^{2}-\frac{3}{4}a+\frac{17}{81}-\frac{28}{9}a^{2}+\frac{64}{81}-\frac{1}{4}a$$

Kombiner \frac{1873}{576}a^{2} og -\frac{28}{9}a^{2} for å få \frac{9}{64}a^{2}.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{3}{4}a+\frac{17}{81}+\frac{64}{81}-\frac{1}{4}a$$

Legg sammen \frac{17}{81} og \frac{64}{81} for å få 1.

$$\frac{7}{64}a^{2}+\frac{9}{64}a^{2}-\frac{3}{4}a+1-\frac{1}{4}a$$

Kombiner \frac{7}{64}a^{2} og \frac{9}{64}a^{2} for å få \frac{1}{4}a^{2}.

$$\frac{1}{4}a^{2}-\frac{3}{4}a+1-\frac{1}{4}a$$

Kombiner -\frac{3}{4}a og -\frac{1}{4}a for å få -a.

$$\frac{1}{4}a^{2}-a+1$$