展开 (3x)/((x-1)(x^4+7))

解答

展开

\frac{3 x}{( x - 1 ) ( x ^{4} + 7 )}

\frac{3 x}{x ^{5} + 7 x - x ^{4} - 7}

求解步骤

\frac{3 x}{( x - 1 ) ( x ^{4} + 7 )}

乘开

(x - 1) (x^{4} + 7) : x^{5} + 7 x - x^{4} - 7

= \frac{3 x}{x ^{5} + 7 x - x ^{4} - 7}

e x p an d \frac{6}{( 9 - 4 x ) ^{- 2}}

e x p an d (6 - a^{2}) + (13 + a^{2})

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

e x p an d s in g (\frac{π}{2} - x)

e x p an d f (x^{2} + π)