展开 (5(sqrt(41)-5))/4

解答

展开

\frac{5 ( 41 - 5 )}{4}

\frac{5 41}{4} - \frac{25}{4}

十进制

1.75390 \dots

求解步骤

\frac{5 ( 41 - 5 )}{4}

乘开

5 (41 - 5) : 541 - 25

= \frac{5 41 - 25}{4}

使用分式法则:

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

\frac{5 41 - 25}{4} = \frac{5 41}{4} - \frac{25}{4}

= \frac{5 41}{4} - \frac{25}{4}

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e x p an d (\frac{x}{2 - 5 y}) 4

s im pl i f y (x - x x) (x - 1)

e x p an d \frac{( D s ^{2} + P s + I ) \cdot 4865}{s ( s ^{2} + 497.8 s + 5951 )}

s im pl i f y (4 + x 2)^{2}