展开 1/(a(x-b)(x-c))

解答

展开

\frac{1}{a ( x - b ) ( x - c )}

\frac{1}{a x ^{2} - a c x - ab x + ab c}

求解步骤

\frac{1}{a ( x - b ) ( x - c )}

乘开

a (x - b) (x - c) : a x^{2} - a c x - ab x + ab c

= \frac{1}{a x ^{2} - a c x - ab x + ab c}

e x p an d \frac{1 - e ^{- x}}{x ( x ^{2} + 2 x + 5 )}

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

s im pl i f y (298) (h^{2} + 298)

e x p an d (- 5 + 61)^{6}

e x p an d \frac{1}{x ( x ^{2} - 8 )}