展开 6/((x-1)(x+1))

解答

展开

\frac{6}{( x - 1 ) ( x + 1 )}

\frac{6}{x ^{2} - 1}

求解步骤

\frac{6}{( x - 1 ) ( x + 1 )}

乘开

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

= \frac{6}{x ^{2} - 1}

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

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

e x p an d (t^{2} + 4 t + 4) \cdot (2^{\frac{1}{2}} (t + 2))

e x p an d \frac{( k + 1 ) ( k + 2 ) ( k + 3 )}{6}

s im pl i f y (p + \frac{a}{v ^{2}}) (v - b)