展开 (40(5+87\sqrt[6]{-1}))/(137)

解答

展开

\frac{40 ( 5 + 87 6 - 1 )}{137}

\frac{200}{137} + \frac{3480 6 - 1}{137}

求解步骤

\frac{40 ( 5 + 87 6 - 1 )}{137}

乘开

40 (5 + 87 6 - 1) : 200 + 3480 6 - 1

= \frac{200 + 3480 6 - 1}{137}

使用分式法则:

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

\frac{200 + 3480 6 - 1}{137} = \frac{200}{137} + \frac{3480 6 - 1}{137}

= \frac{200}{137} + \frac{3480 6 - 1}{137}

e x p an d (1 + 2 j) (\circ - j)

s im pl i f y 9 δ (x - 2)

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

e x p an d \frac{( 23 x ^{2} - x - 1 )}{3 x ( x - 1 ) ^{2}}

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