展开 (14b^7)/(7b^5)

解答

展开

\frac{14 b ^{7}}{7 b ^{5}}

2 b^{2}

求解步骤

\frac{14 b ^{7}}{7 b ^{5}}

数字相除:

\frac{14}{7} = 2

= \frac{2 b ^{7}}{b ^{5}}

使用指数法则:

\frac{x ^{a}}{x ^{b}} = x^{a - b}

\frac{b ^{7}}{b ^{5}} = b^{7 - 5}

= 2 b^{7 - 5}

数字相减:

7 - 5 = 2

= 2 b^{2}

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

e x p an d e^{2 x} (cos (x) - sin (x))

\frac{d ^{4}}{d x ^{4}} ((y) (\frac{3}{x ^{2}} - \frac{x ^{2}}{3}))

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

e x p an d \frac{( x ^{2} - 5 ) ^{3}}{125}