展开 4a^3(h+2)(h-2)

解答

展开

4 a^{3} (h + 2) (h - 2)

4 a^{3} h^{2} - 16 a^{3}

求解步骤

4 a^{3} (h + 2) (h - 2)

展开

4 a^{3} (h + 2) (h - 2) : 4 a^{3} (h^{2} - 4)

= 4 a^{3} (h^{2} - 4)

使用分配律:

a (b - c) = ab - a c

4 a^{3} (h^{2} - 4) = 4 a^{3} h^{2} - 4 a^{3} \cdot 4

= 4 a^{3} h^{2} - 4 a^{3} \cdot 4

数字相乘:

4 \cdot 4 = 16

= 4 a^{3} h^{2} - 16 a^{3}

s im pl i f y (n + 1) (n + 1)

s im pl i f y \frac{x ^{2} - 5 x + 6}{x ^{2} - 9}

s im pl i f y (57)^{2}

s im pl i f y m^{2} + \frac{n ^{2}}{2} mn

e x p an d (x + 3) (3 x^{2} + 8 x + 9)