化简 (3x^2+15xy)/(x+5y)

解答

化简

\frac{3 x ^{2} + 15 x y}{x + 5 y}

3 x

求解步骤

\frac{3 x ^{2} + 15 x y}{x + 5 y}

因式分解

3 x^{2} + 15 x y : 3 x (x + 5 y)

= \frac{3 x ( x + 5 y )}{x + 5 y}

约分:

x + 5 y

= 3 x

\frac{x}{x ^{2} - 6} \geq 1

f a c t or 4 x^{2} - 4 x

4 q^{2} + 8 q - 1 = 4

28 + 19 v = - 8 + 15 v

f a c t or 45 s^{4} - 36 s^{3} - 10 s + 8