展开 x/((x+1)(x-4))

解答

展开

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

\frac{x}{x ^{2} - 3 x - 4}

求解步骤

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

乘开

(x + 1) (x - 4) : x^{2} - 3 x - 4

= \frac{x}{x ^{2} - 3 x - 4}

e x p an d \frac{s + 3}{( s + 1 ) ( s + 2 )}

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

e x p an d \frac{π ( 3 - 3 )}{3}

e x p an d \frac{d x}{x ( x + 1 ) ^{2}}

\frac{\partial}{\partial x} ((z) (x y^{5} - x^{2} y))