展开 (x^2-2x-2)/(x(x-1)(x+2))

解答

展开

\frac{x ^{2} - 2 x - 2}{x ( x - 1 ) ( x + 2 )}

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

求解步骤

\frac{x ^{2} - 2 x - 2}{x ( x - 1 ) ( x + 2 )}

乘开

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

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

e x p an d \frac{10 x ( 10 - x - x ^{1.5} )}{10 - x}

e x p an d a + a^{3} b - 5 a - 10 m

e x p an d \frac{15 C + 6 ( x - 1 ) ^{\frac{5}{2}} + 10 ( x - 1 ) ^{\frac{3}{2}}}{15}

e x p an d 2 e^{t} \cdot e^{2 t}

e x p an d (3 - x + 1) (6 - x + 2)