展开 (2(6-sqrt(29)))/7

解答

展开

\frac{2 ( 6 - 29 )}{7}

\frac{12}{7} - \frac{2 29}{7}

十进制

0.17566 \dots

求解步骤

\frac{2 ( 6 - 29 )}{7}

乘开

2 (6 - 29) : 12 - 229

= \frac{12 - 2 29}{7}

使用分式法则:

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

\frac{12 - 2 29}{7} = \frac{12}{7} - \frac{2 29}{7}

= \frac{12}{7} - \frac{2 29}{7}

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