展开 ((x^2+2x))/2

解答

展开

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

\frac{x ^{2}}{2} + x

求解步骤

\frac{x ^{2} + 2 x}{2}

使用分式法则:

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

\frac{x ^{2} + 2 x}{2} = \frac{x ^{2}}{2} + \frac{2 x}{2}

= \frac{x ^{2}}{2} + \frac{2 x}{2}

数字相除:

\frac{2}{2} = 1

= \frac{x ^{2}}{2} + x

e x p an d - \frac{3}{4} (- \frac{2}{3} z + 2)^{4}

s im pl i f y (3 a + 1) (3 a + 4)

\frac{d}{d x} ((A) (2 x y + \frac{2000}{x} + \frac{2000}{y}))

e x p an d π (4 - 4 y^{2} + y^{4} - y^{8})

e x p an d 25 (2 + 3)