展开 ((n^2+n)x^2)/2

解答

展开

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

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

求解步骤

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

乘开

(n^{2} + n) x^{2} : n^{2} x^{2} + n x^{2}

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

使用分式法则:

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

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

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

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

f (x) = tan^{(8)} ((4 x + 1)^{(3)})

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

e x p an d \frac{63}{( K + 1 ) ^{2}}

e x p an d 3 (\frac{1 - 4 y}{3}) (y)