化简 sqrt(125/80)

解答

化简

\frac{125}{80}

\frac{5}{4}

十进制

1.25

求解步骤

\frac{125}{80}

消掉

\frac{125}{80} : \frac{25}{16}

= \frac{25}{16}

使用根式运算法则:

\frac{a}{b} = \frac{a}{b}, a \geq 0, b \geq 0

= \frac{25}{16}

25 = 5

= \frac{5}{16}

16 = 4

= \frac{5}{4}

so l v e f or m, \frac{4}{3} m = - m + \frac{5}{3} m + 3

so l v e f or s, 5 s + 2 s + 4 s - 5 s = 6

q u a d r a t i c f or m u l a x^{2} - 6 x = 8

s im pl i f y 49 x^{4}

so l v e f or x, 4^{x} = 9