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受欢迎的代数 >

展开-(7(3+sqrt(3)))/6

解答

展开

- \frac{7 ( 3 + 3 )}{6}

解答

- \frac{7}{2} - \frac{7}{2 3}

+1

十进制

- 5.52072 \dots

求解步骤

- \frac{7 ( 3 + 3 )}{6}

乘开

7 (3 + 3) : 21 + 73

= - \frac{21 + 7 3}{6}

使用分式法则:

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

\frac{21 + 7 3}{6} = - (\frac{21}{6}) - (\frac{7 3}{6})

= - (\frac{21}{6}) - (\frac{7 3}{6})

去除括号:

(a) = a

= - \frac{21}{6} - \frac{7 3}{6}

消掉

\frac{21}{6} : \frac{7}{2}

= - \frac{7}{2} - \frac{7 3}{6}

消掉

\frac{7 3}{6} : \frac{7}{2 3}

= - \frac{7}{2} - \frac{7}{2 3}

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