展开-(a(-a^2-1))/b

解答

展开

- \frac{a ( - a ^{2} - 1 )}{b}

\frac{a ^{3}}{b} + \frac{a}{b}

求解步骤

- \frac{a ( - a ^{2} - 1 )}{b}

乘开

a (- a^{2} - 1) : - a^{3} - a

= - \frac{- a ^{3} - a}{b}

使用分式法则:

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

\frac{- a ^{3} - a}{b} = - (- \frac{a ^{3}}{b}) - (- \frac{a}{b})

= - (- \frac{a ^{3}}{b}) - (- \frac{a}{b})

使用法则

- (- a) = a

= \frac{a ^{3}}{b} + \frac{a}{b}

e x p an d (- \frac{1}{10} + 2 πi)^{10}

e x p an d \frac{1}{( r - a y ) y}

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

e x p an d \frac{6}{7 ( 21 - 14 v )}

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