展开 (25(95+sqrt(8705)))/2

解答

展开

\frac{25 ( 95 + 8705 )}{2}

\frac{2375}{2} + \frac{25 8705}{2}

十进制

2353.75736 \dots

求解步骤

\frac{25 ( 95 + 8705 )}{2}

乘开

25 (95 + 8705) : 2375 + 258705

= \frac{2375 + 25 8705}{2}

使用分式法则:

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

\frac{2375 + 25 8705}{2} = \frac{2375}{2} + \frac{25 8705}{2}

= \frac{2375}{2} + \frac{25 8705}{2}

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