展开 (10(4sqrt(23)-5))/(49)

解答

展开

\frac{10 ( 4 23 - 5 )}{49}

\frac{40 23}{49} - \frac{50}{49}

十进制

2.89455 \dots

求解步骤

\frac{10 ( 4 23 - 5 )}{49}

乘开

10 (423 - 5) : 4023 - 50

= \frac{40 23 - 50}{49}

使用分式法则:

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

\frac{40 23 - 50}{49} = \frac{40 23}{49} - \frac{50}{49}

= \frac{40 23}{49} - \frac{50}{49}

\frac{d}{d v} ((x) (u^{2} v + v))

e x p an d (x, y) (x + 2 y - 3)

e x p an d - 5 (x + 7 y = 6)

e x p an d \frac{99.6 ( s + 0.5 ) ^{2}}{s}

e x p an d \frac{4}{( x ^{2} + 4 ) ( x - 2 )}