3/(x^2)-(44)/x =15

解答

\frac{3}{x ^{2}} - \frac{44}{x} = 15

x = \frac{1}{15}, x = - 3

十进制

x = 0.06666 \dots, x = - 3

求解步骤

\frac{3}{x ^{2}} - \frac{44}{x} = 15

乘以最小公倍数

3 - 44 x = 15 x^{2}

解

3 - 44 x = 15 x^{2} : x = \frac{1}{15}, x = - 3

x = \frac{1}{15}, x = - 3

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 = \frac{1}{15}, x = - 3

\frac{11}{x - 2} = \frac{11}{2}

\frac{6}{x ^{2}} - \frac{37}{x} = 13

\frac{4}{x ^{2} - 1} + 1 = \frac{x}{x + 1}

\frac{x}{x + 1} - \frac{1}{x ^{2} + x} = - 3

so l v e f or c, c = \frac{0.05 q ^{2} + 5 q + 500}{q}