展开 1/(x(4-x))

解答

展开

\frac{1}{x ( 4 - x )}

\frac{1}{4 x - x ^{2}}

求解步骤

\frac{1}{x ( 4 - x )}

乘开

x (4 - x) : 4 x - x^{2}

= \frac{1}{4 x - x ^{2}}

e x p an d (8 r^{3} + 6 r + 5) (r^{2} + 1) d x

e x p an d 2 (e d + e)

e x p an d 3 (x - 1)^{2} \cdot ln (2 x)

e x p an d (k - kb) d t

e x p an d \frac{k + 1}{3 ( 42 + 48 k )}