簡約-10.28*0.84^{-2}

解

簡約

- 10.28 \cdot 0.8 4^{- 2}

- 14.56916 \dots

解答ステップ

- 10.28 \cdot 0.8 4^{- 2}

指数の規則を適用する:

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

= - 10.28 \cdot \frac{1}{0.8 4 ^{2}}

分数を乗じる:

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

= - \frac{1 \cdot 10.28}{0.8 4 ^{2}}

数を乗じる:

1 \cdot 10.28 = 10.28

= - \frac{10.28}{0.8 4 ^{2}}

0.8 4^{2} = 0.7056

= - \frac{10.28}{0.7056}

数を割る:

\frac{10.28}{0.7056} = 14.56916 \dots

= - 14.56916 \dots