展开 (h*(a+b))/2

解答

展开

\frac{h \cdot ( a + b )}{2}

\frac{ha}{2} + \frac{hb}{2}

求解步骤

\frac{h ( a + b )}{2}

乘开

h (a + b) : ha + hb

= \frac{ha + hb}{2}

使用分式法则:

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

\frac{ha + hb}{2} = \frac{ha}{2} + \frac{hb}{2}

= \frac{ha}{2} + \frac{hb}{2}

e x p an d x^{2} + (y + 3)^{2}

e x p an d (3 x - 2)^{5}

\frac{\partial}{\partial x} ((z) (x y + yz + z x - 1))

e x p an d \frac{18818 + 10864 3}{( 2 + 3 ) ^{4}}

e x p an d - 3 ((4, 0, - 8) - 8 (6, - 1, - 4))