展开 (3(11+5x))/2

解答

展开

\frac{3 ( 11 + 5 x )}{2}

\frac{33}{2} + \frac{15 x}{2}

求解步骤

\frac{3 ( 11 + 5 x )}{2}

乘开

3 (11 + 5 x) : 33 + 15 x

= \frac{33 + 15 x}{2}

使用分式法则:

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

\frac{33 + 15 x}{2} = \frac{33}{2} + \frac{15 x}{2}

= \frac{33}{2} + \frac{15 x}{2}

e x p an d 44 (c (x - 1))

e x p an d (4 + x)^{3} - 7 (4 + x)

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

e x p an d 2^{3}

e x p an d (2 - 3 x) - 3