Lutasin ang {[(1/2a-2/3b)(1/2a+2/3b)^{3}-(frac{1}{4}a^{2}-frac{4}{9}b^{2})(frac{4}{9}b^{2}+frac{1}{4}a^2)]-frac{1}{3}ab(frac{1}{2}a^2+frac{1}{9}b^2)}^3

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

I-evaluate

$$-\frac{a^{3}b^{9}}{27}$$

Mga Hakbang ng Solution

Gamitin ang binomial theorem na \left(p+q\right)^{3}=p^{3}+3p^{2}q+3pq^{2}+q^{3} para palawakin ang \left(\frac{1}{2}a+\frac{2}{3}b\right)^{3}.

$$\left(\left(\frac{1}{2}a-\frac{2}{3}b\right)\left(\frac{1}{8}a^{3}+\frac{1}{2}a^{2}b+\frac{2}{3}ab^{2}+\frac{8}{27}b^{3}\right)-\left(\frac{1}{4}a^{2}-\frac{4}{9}b^{2}\right)\left(\frac{4}{9}b^{2}+\frac{1}{4}a^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Gamitin ang distributive property para i-multiply ang \frac{1}{2}a-\frac{2}{3}b sa \frac{1}{8}a^{3}+\frac{1}{2}a^{2}b+\frac{2}{3}ab^{2}+\frac{8}{27}b^{3} at para pagsamahin ang magkakatulad na term.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{4}a^{2}-\frac{4}{9}b^{2}\right)\left(\frac{4}{9}b^{2}+\frac{1}{4}a^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Isaalang-alang ang \left(\frac{1}{4}a^{2}-\frac{4}{9}b^{2}\right)\left(\frac{4}{9}b^{2}+\frac{1}{4}a^{2}\right). Maaaring ma-transform ang pag-multiply sa difference ng mga square gamit ang rule na: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\left(\frac{1}{4}a^{2}\right)^{2}-\left(\frac{4}{9}b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Palawakin ang \left(\frac{1}{4}a^{2}\right)^{2}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\left(\frac{1}{4}\right)^{2}\left(a^{2}\right)^{2}-\left(\frac{4}{9}b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Para mag-raise ng power ng numero gamit ang ibang power, i-multiply ang mga exponent. I-multiply ang 2 at 2 para makuha ang 4.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\left(\frac{1}{4}\right)^{2}a^{4}-\left(\frac{4}{9}b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Kalkulahin ang \frac{1}{4} sa power ng 2 at kunin ang \frac{1}{16}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{16}a^{4}-\left(\frac{4}{9}b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Palawakin ang \left(\frac{4}{9}b^{2}\right)^{2}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{16}a^{4}-\left(\frac{4}{9}\right)^{2}\left(b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Para mag-raise ng power ng numero gamit ang ibang power, i-multiply ang mga exponent. I-multiply ang 2 at 2 para makuha ang 4.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{16}a^{4}-\left(\frac{4}{9}\right)^{2}b^{4}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Kalkulahin ang \frac{4}{9} sa power ng 2 at kunin ang \frac{16}{81}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{16}a^{4}-\frac{16}{81}b^{4}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Para hanapin ang kabaligtaran ng \frac{1}{16}a^{4}-\frac{16}{81}b^{4}, hanapin ang kabaligtaran ng bawat term.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\frac{1}{16}a^{4}+\frac{16}{81}b^{4}-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Pagsamahin ang \frac{1}{16}a^{4} at -\frac{1}{16}a^{4} para makuha ang 0.

$$\left(\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}+\frac{16}{81}b^{4}-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Pagsamahin ang -\frac{16}{81}b^{4} at \frac{16}{81}b^{4} para makuha ang 0.

$$\left(\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Gamitin ang distributive property para i-multiply ang -\frac{1}{3}ab gamit ang \frac{1}{2}a^{2}+\frac{1}{9}b^{2}.

$$\left(\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{1}{6}a^{3}b-\frac{1}{27}ab^{3}\right)^{3}$$

Pagsamahin ang \frac{1}{6}a^{3}b at -\frac{1}{6}a^{3}b para makuha ang 0.

$$\left(-\frac{8}{27}ab^{3}-\frac{1}{27}ab^{3}\right)^{3}$$

Pagsamahin ang -\frac{8}{27}ab^{3} at -\frac{1}{27}ab^{3} para makuha ang -\frac{1}{3}ab^{3}.

$$\left(-\frac{1}{3}ab^{3}\right)^{3}$$

Palawakin ang \left(-\frac{1}{3}ab^{3}\right)^{3}.

$$\left(-\frac{1}{3}\right)^{3}a^{3}\left(b^{3}\right)^{3}$$

Para mag-raise ng power ng numero gamit ang ibang power, i-multiply ang mga exponent. I-multiply ang 3 at 3 para makuha ang 9.

$$\left(-\frac{1}{3}\right)^{3}a^{3}b^{9}$$

Kalkulahin ang -\frac{1}{3} sa power ng 3 at kunin ang -\frac{1}{27}.

$$-\frac{1}{27}a^{3}b^{9}$$

Palawakin

$$-\frac{a^{3}b^{9}}{27}$$

Mga Hakbang ng Solution

Gamitin ang binomial theorem na \left(p+q\right)^{3}=p^{3}+3p^{2}q+3pq^{2}+q^{3} para palawakin ang \left(\frac{1}{2}a+\frac{2}{3}b\right)^{3}.

$$\left(\left(\frac{1}{2}a-\frac{2}{3}b\right)\left(\frac{1}{8}a^{3}+\frac{1}{2}a^{2}b+\frac{2}{3}ab^{2}+\frac{8}{27}b^{3}\right)-\left(\frac{1}{4}a^{2}-\frac{4}{9}b^{2}\right)\left(\frac{4}{9}b^{2}+\frac{1}{4}a^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Gamitin ang distributive property para i-multiply ang \frac{1}{2}a-\frac{2}{3}b sa \frac{1}{8}a^{3}+\frac{1}{2}a^{2}b+\frac{2}{3}ab^{2}+\frac{8}{27}b^{3} at para pagsamahin ang magkakatulad na term.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{4}a^{2}-\frac{4}{9}b^{2}\right)\left(\frac{4}{9}b^{2}+\frac{1}{4}a^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Isaalang-alang ang \left(\frac{1}{4}a^{2}-\frac{4}{9}b^{2}\right)\left(\frac{4}{9}b^{2}+\frac{1}{4}a^{2}\right). Maaaring ma-transform ang pag-multiply sa difference ng mga square gamit ang rule na: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\left(\frac{1}{4}a^{2}\right)^{2}-\left(\frac{4}{9}b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Palawakin ang \left(\frac{1}{4}a^{2}\right)^{2}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\left(\frac{1}{4}\right)^{2}\left(a^{2}\right)^{2}-\left(\frac{4}{9}b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Para mag-raise ng power ng numero gamit ang ibang power, i-multiply ang mga exponent. I-multiply ang 2 at 2 para makuha ang 4.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\left(\frac{1}{4}\right)^{2}a^{4}-\left(\frac{4}{9}b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Kalkulahin ang \frac{1}{4} sa power ng 2 at kunin ang \frac{1}{16}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{16}a^{4}-\left(\frac{4}{9}b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Palawakin ang \left(\frac{4}{9}b^{2}\right)^{2}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{16}a^{4}-\left(\frac{4}{9}\right)^{2}\left(b^{2}\right)^{2}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Para mag-raise ng power ng numero gamit ang ibang power, i-multiply ang mga exponent. I-multiply ang 2 at 2 para makuha ang 4.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{16}a^{4}-\left(\frac{4}{9}\right)^{2}b^{4}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Kalkulahin ang \frac{4}{9} sa power ng 2 at kunin ang \frac{16}{81}.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\left(\frac{1}{16}a^{4}-\frac{16}{81}b^{4}\right)-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Para hanapin ang kabaligtaran ng \frac{1}{16}a^{4}-\frac{16}{81}b^{4}, hanapin ang kabaligtaran ng bawat term.

$$\left(\frac{1}{16}a^{4}+\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}-\frac{1}{16}a^{4}+\frac{16}{81}b^{4}-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Pagsamahin ang \frac{1}{16}a^{4} at -\frac{1}{16}a^{4} para makuha ang 0.

$$\left(\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{16}{81}b^{4}+\frac{16}{81}b^{4}-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Pagsamahin ang -\frac{16}{81}b^{4} at \frac{16}{81}b^{4} para makuha ang 0.

$$\left(\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{1}{3}ab\left(\frac{1}{2}a^{2}+\frac{1}{9}b^{2}\right)\right)^{3}$$

Gamitin ang distributive property para i-multiply ang -\frac{1}{3}ab gamit ang \frac{1}{2}a^{2}+\frac{1}{9}b^{2}.

$$\left(\frac{1}{6}a^{3}b-\frac{8}{27}ab^{3}-\frac{1}{6}a^{3}b-\frac{1}{27}ab^{3}\right)^{3}$$

Pagsamahin ang \frac{1}{6}a^{3}b at -\frac{1}{6}a^{3}b para makuha ang 0.

$$\left(-\frac{8}{27}ab^{3}-\frac{1}{27}ab^{3}\right)^{3}$$

Pagsamahin ang -\frac{8}{27}ab^{3} at -\frac{1}{27}ab^{3} para makuha ang -\frac{1}{3}ab^{3}.

$$\left(-\frac{1}{3}ab^{3}\right)^{3}$$

Palawakin ang \left(-\frac{1}{3}ab^{3}\right)^{3}.

$$\left(-\frac{1}{3}\right)^{3}a^{3}\left(b^{3}\right)^{3}$$

Para mag-raise ng power ng numero gamit ang ibang power, i-multiply ang mga exponent. I-multiply ang 3 at 3 para makuha ang 9.

$$\left(-\frac{1}{3}\right)^{3}a^{3}b^{9}$$

Kalkulahin ang -\frac{1}{3} sa power ng 3 at kunin ang -\frac{1}{27}.

$$-\frac{1}{27}a^{3}b^{9}$$