展开 ((1+z^2)3)/2

解答

展开

\frac{( 1 + z ^{2} ) 3}{2}

\frac{3 z ^{2}}{2} + \frac{3}{2}

求解步骤

\frac{( 1 + z ^{2} ) \cdot 3}{2}

乘开

(1 + z^{2}) \cdot 3 : 3 + 3 z^{2}

= \frac{3 + 3 z ^{2}}{2}

使用分式法则:

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

\frac{3 + 3 z ^{2}}{2} = \frac{3}{2} + \frac{3 z ^{2}}{2}

= \frac{3}{2} + \frac{3 z ^{2}}{2}

改写为标准形式

= \frac{3 z ^{2}}{2} + \frac{3}{2}

\frac{\partial}{\partial x} ((z) (x^{2} - 3 x y + y^{2}))

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

e x p an d 1 + (\frac{( x ^{4} - 1 ) ^{2}}{4 x ^{4}})

e x p an d \frac{1}{6} π (5, 5 + 2.5) + 2 (5.5 - 2.5)

e x p an d \frac{2}{( x + 1 ) ( x + 3 )}