展开 ((4-x^2))/(x(1+x))

解答

展开

\frac{( 4 - x ^{2} )}{x ( 1 + x )}

\frac{4 - x ^{2}}{x + x ^{2}}

求解步骤

\frac{4 - x ^{2}}{x ( 1 + x )}

乘开

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

= \frac{4 - x ^{2}}{x + x ^{2}}

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

e x p an d 2 (3 - 1)

e x p an d (\frac{1}{y ^{2}}, - \frac{2 x}{y ^{3}}) \cdot (1, 0)

\frac{d}{d v} ((p) (p + \frac{5.2}{v ^{2}}) (v - 8.1))

e x p an d x^{2} (\frac{x ^{3} ln ( x )}{3} - \frac{x ^{3}}{9})