Math Problem Statement

Which of the following represents all of the solutions to the equation x^2 = 121?

Solution

The equation provided in the image is:

x2=121x^2 = 121

To find all solutions to this equation, we need to solve for xx.

  1. Take the square root of both sides: x=±121x = \pm \sqrt{121}

  2. The square root of 121 is 11: x=±11x = \pm 11

Thus, the solutions to the equation x2=121x^2 = 121 are:

x=11orx=11x = 11 \quad \text{or} \quad x = -11

Do you have any further questions, or would you like a detailed explanation of any step?

Related questions:

  1. How do you solve a quadratic equation by factoring?
  2. What are the different methods to solve quadratic equations?
  3. How does the sign of a number affect its square root?
  4. Why do we consider both positive and negative roots when solving x2=ax^2 = a?
  5. Can all quadratic equations be solved by taking square roots?

Tip:

When solving x2=ax^2 = a, always remember to consider both the positive and negative square roots.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Equations

Formulas

x = ±√a

Theorems

Square Root Theorem

Suitable Grade Level

Grades 7-9