化简 (x^2)/(x^4)

解答

化简

\frac{x ^{2}}{x ^{4}}

\frac{1}{x ^{2}}

求解步骤

\frac{x ^{2}}{x ^{4}}

使用指数法则:

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

= x^{2 - 4}

数字相减:

2 - 4 = - 2

= x^{- 2}

使用指数法则:

a^{- b} = \frac{1}{a ^{b}}

= \frac{1}{x ^{2}}

900 x^{2} - 49.05 x - 4.905 = 0

\frac{1}{3} + \frac{1}{2} x \leq \frac{5}{6} x - \frac{5}{3}

f a c t or x^{2} + \frac{3}{2} x - 1

- x - 9 = - 15

x^{2} - 4 x = 19