展开 (125(10+sqrt(73)))/2

解答

展开

\frac{125 ( 10 + 73 )}{2}

625 + \frac{125 73}{2}

十进制

1159.00023 \dots

求解步骤

\frac{125 ( 10 + 73 )}{2}

乘开

125 (10 + 73) : 1250 + 12573

= \frac{1250 + 125 73}{2}

使用分式法则:

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

\frac{1250 + 125 73}{2} = \frac{1250}{2} + \frac{125 73}{2}

= \frac{1250}{2} + \frac{125 73}{2}

数字相除:

\frac{1250}{2} = 625

= 625 + \frac{125 73}{2}

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