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受欢迎的代数 >

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

解答

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

解答

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

+1

十进制

x = - 0.5, x = - 1

求解步骤

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

在两边乘以

x + 2

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

解

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

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

验证解

找到无定义的点（奇点）:

x = - 2

将不在定义域的点与解相综合:

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

作图

流行的例子

1/x = 1/5+3/(2x)

\frac{1}{x} = \frac{1}{5} + \frac{3}{2 x}

solvefor x,(f-g)(x)=((x^2+2x-1))/x

so l v e f or x, (f - g) (x) = \frac{( x ^{2} + 2 x - 1 )}{x}

1/(x-2)+3/(x+3)=6

\frac{1}{x - 2} + \frac{3}{x + 3} = 6

63=(3× (x^3-1))/(x-1)

63 = \frac{3 \times ( x ^{3} - 1 )}{x - 1}

8 + \frac{6}{x} = x + 9