化简 ((-1)/2)^{20}

解答

化简

(\frac{- 1}{2})^{20}

\frac{1}{1048576}

十进制

9.53674 E - 7

求解步骤

(\frac{- 1}{2})^{20}

使用指数法则:

(\frac{a}{b})^{c} = \frac{a ^{c}}{b ^{c}}

= \frac{( - 1 ) ^{20}}{2 ^{20}}

(- 1)^{20} = 1

= \frac{1}{2 ^{20}}

2^{20} = 1048576

= \frac{1}{1048576}

so l v e f or x, \frac{90}{x} - \frac{90}{( x - 5 )} = - \frac{1}{4}

s im pl i f y \frac{13}{2}

s im pl i f y \frac{( x ^{7} )}{( x ^{2} )}

s im pl i f y 74%

so l v e f or x, 3 (2^{x}) = 6