化简 (1-1/(x^2))*(2+x)

解答

化简

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

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

求解步骤

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

合并

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

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

使用分式法则:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

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

e x p an d f (12 x - 6) x^{2} d x

\frac{d}{d t} ((θ) (θ^{2} - t^{2})^{2})

\frac{\partial}{\partial x} ((z) (t x^{2} + yz - 2))

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

s im pl i f y (- cos (x) + \frac{cos ^{3} ( x )}{3})^{2}