Math Problem Statement

Solve the quadratic equation x^2 - 2ax + a^2 - b^2 = 0.

Solution

The equation in the image is:

x22ax+a2b2=0x^2 - 2ax + a^2 - b^2 = 0

Solution:

This is a quadratic equation in xx. To solve it, we rewrite the equation and simplify.

  1. Recognize the structure:

    The equation can be written as: x22ax+(a2b2)=0x^2 - 2ax + (a^2 - b^2) = 0

  2. Factorize if possible:

    Recall the difference of squares formula: a2b2=(ab)(a+b)a^2 - b^2 = (a - b)(a + b)

    Using this, the equation becomes: x22ax+(ab)(a+b)=0x^2 - 2ax + (a - b)(a + b) = 0

  3. Solve using the quadratic formula:

    The general quadratic equation is: Ax2+Bx+C=0Ax^2 + Bx + C = 0 Here, A=1A = 1, B=2aB = -2a, and C=a2b2C = a^2 - b^2.

    Using the quadratic formula: x=B±B24AC2Ax = \frac{-B \pm \sqrt{B^2 - 4AC}}{2A}

    Substituting A=1A = 1, B=2aB = -2a, and C=a2b2C = a^2 - b^2: x=(2a)±(2a)24(1)(a2b2)2(1)x = \frac{-(-2a) \pm \sqrt{(-2a)^2 - 4(1)(a^2 - b^2)}}{2(1)}

    Simplify: x=2a±4a24(a2b2)2x = \frac{2a \pm \sqrt{4a^2 - 4(a^2 - b^2)}}{2} x=2a±4a24a2+4b22x = \frac{2a \pm \sqrt{4a^2 - 4a^2 + 4b^2}}{2} x=2a±4b22x = \frac{2a \pm \sqrt{4b^2}}{2} x=2a±2b2x = \frac{2a \pm 2b}{2}

  4. Simplify the two solutions:

    x=a+borx=abx = a + b \quad \text{or} \quad x = a - b

Final Answer:

The solutions to the quadratic equation are: x=a+bandx=abx = a + b \quad \text{and} \quad x = a - b


Do you want more details or have any questions about this solution?

Related Questions:

  1. What happens if a=0a = 0 or b=0b = 0 in the equation?
  2. How is the quadratic formula derived?
  3. Can you graph this quadratic equation for specific values of aa and bb?
  4. How does the discriminant (Δ\Delta) determine the nature of the roots in this case?
  5. What is the significance of the factorization method used in solving the equation?

Tip:

Always verify whether you can factorize a quadratic equation before jumping to the quadratic formula. It often simplifies the solution process!

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Math Problem Analysis

Mathematical Concepts

Quadratic Equations
Factorization
Algebra

Formulas

Quadratic formula: x = (-B ± √(B² - 4AC)) / 2A
Difference of squares: a² - b² = (a - b)(a + b)

Theorems

Quadratic formula

Suitable Grade Level

Grades 9-11