(x^3+10x^2+25x)/(x+5)=0

解答

\frac{x ^{3} + 10 x ^{2} + 25 x}{x + 5} = 0

x = 0

求解步骤

\frac{x ^{3} + 10 x ^{2} + 25 x}{x + 5} = 0

化简

\frac{x ^{3} + 10 x ^{2} + 25 x}{x + 5} : x (x + 5)

x (x + 5) = 0

解

x (x + 5) = 0 : x = 0, x = - 5

x = 0, x = - 5

验证解

找到无定义的点（奇点）:

x = - 5

因为方程对以下值无定义:

- 5

x = 0

182. 5^{2} = \frac{1}{x} 0. 7^{3}

8 - \frac{7}{x ^{2} + 6 x} = \frac{x}{x + 6}

\frac{3}{7 x - 1} + \frac{1}{x} = 0

\frac{x ^{2} - 64}{8 x - x ^{2}} = 0

\frac{2 x}{2 x + 3} + \frac{6}{4 x + 6} = 5