展开 ((2x+v^2x-1))/(x^2(v+1))

解答

展开

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

\frac{2 x + v ^{2} x - 1}{v x ^{2} + x ^{2}}

求解步骤

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

乘开

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

= \frac{2 x + v ^{2} x - 1}{v x ^{2} + x ^{2}}

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)

e x p an d cos ((5 - n) π)

e x p an d - \frac{4 x y + 8 y - 6}{( x + 2 ) ^{2}}