Lesson eLearning

Expand (a + b)².

medium MCQ Class 10 · Mathematics · Quadratic Equations
  1. a² + 2ab + b²
  2. a² + b²
  3. a² - 2ab + b²
  4. a² + ab + b²
Answer
a² + 2ab + b²

The correct answer is a² + 2ab + b² — (a + b)² = (a + b)(a + b) = a² + 2ab + b².

Step-by-step solution

  1. (a + b)² = (a + b)(a + b) = a² + 2ab + b².

Concept tested: Algebraic Identities

Published · How this solution was prepared and checked

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