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受欢迎的代数 >

x-2/(x+3)=2

解答

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

解答

x = \frac{- 1 + 33}{2}, x = \frac{- 1 - 33}{2}

+1

十进制

x = 2.37228 \dots, x = - 3.37228 \dots

求解步骤

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

在两边乘以

x + 3

x (x + 3) - 2 = 2 (x + 3)

解

x (x + 3) - 2 = 2 (x + 3) : x = \frac{- 1 + 33}{2}, x = \frac{- 1 - 33}{2}

x = \frac{- 1 + 33}{2}, x = \frac{- 1 - 33}{2}

验证解

找到无定义的点（奇点）:

x = - 3

将不在定义域的点与解相综合:

x = \frac{- 1 + 33}{2}, x = \frac{- 1 - 33}{2}

作图

流行的例子

2 x + 3 = \frac{- 9}{x}

\frac{3}{a} = \frac{1}{6}

3/(x+2)-1= 2/(x+2)

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

(71-3x)/(6x-9)= 1/3

\frac{71 - 3 x}{6 x - 9} = \frac{1}{3}

0.5 = \frac{1}{x ^{2} - x}