12x-(288)/(x^2)=0

解答

12 x - \frac{288}{x ^{2}} = 0

x = 233, x = - 33 + 6 3^{5} i, x = - 33 - 6 3^{5} i

求解步骤

12 x - \frac{288}{x ^{2}} = 0

在两边乘以

x^{2}

12 x^{3} - 288 = 0

解

12 x^{3} - 288 = 0 : x = 233, x = - 33 + 6 3^{5} i, x = - 33 - 6 3^{5} i

x = 233, x = - 33 + 6 3^{5} i, x = - 33 - 6 3^{5} i

验证解

找到无定义的点（奇点）:

x = 0

将不在定义域的点与解相综合:

x = 233, x = - 33 + 6 3^{5} i, x = - 33 - 6 3^{5} i

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

\frac{7 x - 1}{x ^{2} + 9} = 1

\frac{5 x}{x - 3} - 1 = - \frac{1}{x - 3}

19.11969 = 19.62 x + (\frac{1.5}{3 x})^{2}

\frac{x + 2}{x - 2} = a