Math Problem Statement

Solution

The image shows the following equation to solve:

2x3x+4=34xx2\frac{2x - 3}{x + 4} = 3 - \frac{4x}{x - 2}

Steps to Solve:

  1. Clear the fractions by multiplying both sides of the equation by (x+4)(x2)(x + 4)(x - 2), the least common denominator (LCD) of all fractions involved.

    (x+4)(x2)2x3x+4=(x+4)(x2)(34xx2)(x + 4)(x - 2) \cdot \frac{2x - 3}{x + 4} = (x + 4)(x - 2) \cdot \left(3 - \frac{4x}{x - 2}\right)

  2. Simplify the equation:

    • The left-hand side simplifies to:

      (x2)(2x3)(x - 2)(2x - 3)

    • The right-hand side expands to:

      3(x+4)(x2)4x(x+4)3(x + 4)(x - 2) - 4x(x + 4)

  3. Expand and simplify both sides:

    • Expanding the left-hand side:

      2x24x3x+6=2x27x+62x^2 - 4x - 3x + 6 = 2x^2 - 7x + 6

    • Expanding the right-hand side:

      3(x22x+4x8)4x216x3(x^2 - 2x + 4x - 8) - 4x^2 - 16x Simplifies to:

      3x2+6x244x216x=x210x243x^2 + 6x - 24 - 4x^2 - 16x = -x^2 - 10x - 24

  4. Combine like terms and set the equation to zero:

    2x27x+6=x210x242x^2 - 7x + 6 = -x^2 - 10x - 24

    Add x2+10x+24x^2 + 10x + 24 to both sides:

    3x2+3x+30=03x^2 + 3x + 30 = 0

    Simplify by dividing the equation by 3:

    x2+x+10=0x^2 + x + 10 = 0

  5. Solve the quadratic equation x2+x+10=0x^2 + x + 10 = 0:

    The discriminant (b24acb^2 - 4ac) is:

    124(1)(10)=140=391^2 - 4(1)(10) = 1 - 40 = -39

    Since the discriminant is negative, there are no real solutions. The solutions are complex:

    x=1±392=1±i392x = \frac{-1 \pm \sqrt{-39}}{2} = \frac{-1 \pm i\sqrt{39}}{2}

Final Answer:

The solutions are complex numbers: x=1+i392,x=1i392x = \frac{-1 + i\sqrt{39}}{2}, \quad x = \frac{-1 - i\sqrt{39}}{2}

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Math Problem Analysis

Mathematical Concepts

Equations
Fractions
Quadratic Equations
Complex Numbers

Formulas

Quadratic equation
Discriminant formula

Theorems

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Suitable Grade Level

Grades 10-12