化简 x/(7x+x^2)

解答

化简

\frac{x}{7 x + x ^{2}}

\frac{1}{7 + x}

求解步骤

\frac{x}{7 x + x ^{2}}

因式分解

7 x + x^{2} : x (7 + x)

= \frac{x}{x ( 7 + x )}

约分:

x

= \frac{1}{7 + x}

f a c t or x^{4} + x^{3} - 24

s im pl i f y 10 (\frac{x - 6}{10}) + 6

e x p an d (8 x - 7)^{2}

s im pl i f y (2 x + 3)^{2} - (2 x - 3)^{2} + (3 x - 4)^{2} - 8 x^{2} - 16

s im pl i f y \frac{3}{2} \cdot \frac{5}{2}