展开 1/((x)(x-1+k))

解答

展开

\frac{1}{( x ) ( x - 1 + k )}

\frac{1}{x ^{2} - x + k x}

求解步骤

\frac{1}{( x ) ( x - 1 + k )}

去除括号:

(a) = a

= \frac{1}{x ( x - 1 + k )}

乘开

x (x - 1 + k) : x^{2} - x + k x

= \frac{1}{x ^{2} - x + k x}

e x p an d (t^{2} - cos (t)) d t

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

e x p an d (e^{e^{x}}) \cdot (1 + e^{x})

e x p an d - \frac{2 ( x ^{2} + 6 x - 7 )}{15}

e x p an d^{'} 2 (x^{2} + 3 x - 4) (4 x + 3)