展开 \sqrt[3]{x}(x-8)

解答

展开

3 x (x - 8)

x 3 x - 8 3 x

求解步骤

3 x (x - 8)

使用分配律:

a (b - c) = ab - a c

3 x (x - 8) = 3 x x - 3 x \cdot 8

= 3 x x - 3 x \cdot 8

= x 3 x - 8 3 x

e x p an d (1 + \frac{1}{3} y)^{7}

s im pl i f y \frac{( 4 + 7 a ) ( 7 - 4 a )}{49 - 16 a}

e x p an d z - (\frac{1}{3})^{(n - 2)} u (n - 2)

\frac{d}{d s} ((w (s, x (w, s), y (w, s), z (w, s))) (x (w, s)^{2} + y (w, s)^{2} + z (w, s)^{2}))

e x p an d f (1 - sin (1))