展开 (2x^2)/((x-2)(x^2+a))

解答

展开

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

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

求解步骤

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

乘开

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

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

e x p an d 3 (x + 2)^{- 1} - 4 (3 - x)^{- 1}

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

e x p an d - \frac{9 ( x + 2 )}{16 ( y - 4 )}

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

e x p an d - \frac{2}{( s + 4 ) ( s + 3 )}