展开 (5(192sqrt(3)-421))/(22)

解答

展开

\frac{5 ( 192 3 - 421 )}{22}

\frac{480 3}{11} - \frac{2105}{22}

十进制

- 20.10141 \dots

求解步骤

\frac{5 ( 192 3 - 421 )}{22}

乘开

5 (1923 - 421) : 9603 - 2105

= \frac{960 3 - 2105}{22}

使用分式法则:

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

\frac{960 3 - 2105}{22} = \frac{960 3}{22} - \frac{2105}{22}

= \frac{960 3}{22} - \frac{2105}{22}

消掉

\frac{960 3}{22} : \frac{480 3}{11}

= \frac{480 3}{11} - \frac{2105}{22}

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