展开 (3(sqrt(2)+1))/2

解答

展开

\frac{3 ( 2 + 1 )}{2}

\frac{3}{2} + \frac{3}{2}

十进制

3.62132 \dots

求解步骤

\frac{3 ( 2 + 1 )}{2}

乘开

3 (2 + 1) : 32 + 3

= \frac{3 2 + 3}{2}

使用分式法则:

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

\frac{3 2 + 3}{2} = \frac{3 2}{2} + \frac{3}{2}

= \frac{3 2}{2} + \frac{3}{2}

消掉

\frac{3 2}{2} : \frac{3}{2}

= \frac{3}{2} + \frac{3}{2}

\frac{d}{d p} ((x (p)) (20 (15 - p)))

e x p an d (1 - t (x)) \cdot x^{'}

e x p an d 8 n - (6 n + 5 = 9)

e x p an d (c x^{2} + b x + a) (f x^{2} + e x + d)

e x p an d 12 (\frac{6 - 1}{2 x})