化简 (2!)/(1!(2-1)!)

解答

化简

\frac{2 !}{1 ! ( 2 - 1 ) !}

2

求解步骤

\frac{2 !}{1 ! ( 2 - 1 ) !}

1! (2 - 1)! = 1

= \frac{2 !}{1}

使用分式法则:

\frac{a}{1} = a

= 2!

2! = 2

= 2

s im pl i f y \frac{1}{6} \cdot \frac{1}{6} \cdot \frac{1}{6}

x^{2} = 11 x - 24

x^{3} (x - 1) \geq 2 x^{2} (6 - x)

f a c t or 16 x - x^{2}

s im pl i f y \frac{72}{- 9}