展开 (4(x-2)(2n+1))/(2n+3)

解答

展开

\frac{4 ( x - 2 ) ( 2 n + 1 )}{2 n + 3}

\frac{8 n x + 4 x - 16 n - 8}{2 n + 3}

求解步骤

\frac{4 ( x - 2 ) ( 2 n + 1 )}{2 n + 3}

乘开

4 (x - 2) (2 n + 1) : 8 n x + 4 x - 16 n - 8

= \frac{8 n x + 4 x - 16 n - 8}{2 n + 3}

e x p an d C (0, 0) Q (2, - 3)

s im pl i f y (23 x + 52)^{2}

e x p an d \frac{1}{6} \cdot 125 x^{3} - 45 x^{2} + 0.4 x + 0.384

\frac{d}{d v} ((p) ((p + 6.9 v^{2}) (v - 3.1)))

e x p an d \frac{3 ( 8 π - 9 3 )}{64}