Aromātai
21-9a-2a^{2}
Whakaroha
21-9a-2a^{2}
Tohaina
Kua tāruatia ki te papatopenga
4a^{2}+12a+9-3\left(2a-1\right)\left(a+4\right)
Whakamahia te ture huarua \left(p+q\right)^{2}=p^{2}+2pq+q^{2} hei whakaroha \left(2a+3\right)^{2}.
4a^{2}+12a+9+\left(-6a+3\right)\left(a+4\right)
Whakamahia te āhuatanga tohatoha hei whakarea te -3 ki te 2a-1.
4a^{2}+12a+9-6a^{2}-21a+12
Whakamahia te āhuatanga tuaritanga hei whakarea te -6a+3 ki te a+4 ka whakakotahi i ngā kupu rite.
-2a^{2}+12a+9-21a+12
Pahekotia te 4a^{2} me -6a^{2}, ka -2a^{2}.
-2a^{2}-9a+9+12
Pahekotia te 12a me -21a, ka -9a.
-2a^{2}-9a+21
Tāpirihia te 9 ki te 12, ka 21.
4a^{2}+12a+9-3\left(2a-1\right)\left(a+4\right)
Whakamahia te ture huarua \left(p+q\right)^{2}=p^{2}+2pq+q^{2} hei whakaroha \left(2a+3\right)^{2}.
4a^{2}+12a+9+\left(-6a+3\right)\left(a+4\right)
Whakamahia te āhuatanga tohatoha hei whakarea te -3 ki te 2a-1.
4a^{2}+12a+9-6a^{2}-21a+12
Whakamahia te āhuatanga tuaritanga hei whakarea te -6a+3 ki te a+4 ka whakakotahi i ngā kupu rite.
-2a^{2}+12a+9-21a+12
Pahekotia te 4a^{2} me -6a^{2}, ka -2a^{2}.
-2a^{2}-9a+9+12
Pahekotia te 12a me -21a, ka -9a.
-2a^{2}-9a+21
Tāpirihia te 9 ki te 12, ka 21.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
whārite paerangi
y = 3x + 4
Arithmetic
699 * 533
Poukapa
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Whakarerekētanga
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Whakaurunga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}