The problem asks to solve the quadratic equation $\frac{3}{2x+1} = \frac{x}{x-2}$.

AlgebraQuadratic EquationsComplex NumbersEquation Solving
2025/4/25

1. Problem Description

The problem asks to solve the quadratic equation 32x+1=xx2\frac{3}{2x+1} = \frac{x}{x-2}.

2. Solution Steps

First, we cross-multiply to eliminate the fractions:
3(x2)=x(2x+1)3(x-2) = x(2x+1)
Expanding both sides, we get:
3x6=2x2+x3x - 6 = 2x^2 + x
Rearrange the equation to form a standard quadratic equation ax2+bx+c=0ax^2 + bx + c = 0:
2x2+x3x+6=02x^2 + x - 3x + 6 = 0
2x22x+6=02x^2 - 2x + 6 = 0
Divide the whole equation by 2:
x2x+3=0x^2 - x + 3 = 0
Now we solve the quadratic equation using the quadratic formula:
x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
In this case, a=1a=1, b=1b=-1, and c=3c=3.
x=(1)±(1)24(1)(3)2(1)x = \frac{-(-1) \pm \sqrt{(-1)^2 - 4(1)(3)}}{2(1)}
x=1±1122x = \frac{1 \pm \sqrt{1 - 12}}{2}
x=1±112x = \frac{1 \pm \sqrt{-11}}{2}
x=1±i112x = \frac{1 \pm i\sqrt{11}}{2}

3. Final Answer

x=1+i112x = \frac{1 + i\sqrt{11}}{2} and x=1i112x = \frac{1 - i\sqrt{11}}{2}

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