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受欢迎的代数 >

化简 (2(-0.501)+1)/(1/4-(-0.501^2))

解答

化简

\frac{2 ( - 0.501 ) + 1}{\frac{1}{4} - ( - 0.50 1 ^{2} )}

解答

- 0.003992008

求解步骤

\frac{2 ( - 0.501 ) + 1}{\frac{1}{4} - ( - 0.50 1 ^{2} )}

去除括号:

(- a) = - a, - (- a) = a

= \frac{- 2 \cdot 0.501 + 1}{\frac{1}{4} + 0.50 1 ^{2}}

- 2 \cdot 0.501 + 1 = - 0.002

= \frac{- 0.002}{\frac{1}{4} + 0.50 1 ^{2}}

0.50 1^{2} = 0.251001

= \frac{- 0.002}{\frac{1}{4} + 0.251001}

使用分式法则:

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

= - \frac{0.002}{\frac{1}{4} + 0.251001}

转换为小数形式

\frac{1}{4} = 0.25

= - \frac{0.002}{0.25 + 0.251001}

数字相加:

0.25 + 0.251001 = 0.501001

= - \frac{0.002}{0.501001}

数字相除:

\frac{0.002}{0.501001} = 0.003992008

= - 0.003992008

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5 (2 x - 3) + 8 = 9

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- 4 x \leq - 16

7 x - 1 = 8 x - 14

10x-4.5+3x=12x-1.1

10 x - 4.5 + 3 x = 12 x - 1.1