展开 (2x-2)/((x-2)(x+1)^2)

解答

展开

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

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

求解步骤

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

(x + 1)^{2} = x^{2} + 2 x + 1

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

乘开

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

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

e x p an d e^{\frac{( 1 - 2 a ) \cdot ( B )}{2 + B}}

e x p an d 4 e (e + 2)

e x p an d e^{x} (x + 10 e^{- x})

e x p an d \frac{s + 1}{s ^{2} ( s ^{2} + 9 )}

e x p an d \frac{x ^{2} + 2 x - 5}{( x + 5 ) ( x + 2 )}