WBCS.LIVE practice question

What is valid for (a + b)2=a2 + b2?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Can be true only for a finite number of (a, b)
  2. Cannot be true for any set of (a, b)
  3. Can be true for exactly one pair (a, b)
  4. Can be true for infinite number of (a, b)

Correct answer and explanation

Correct answer: Can be true for infinite number of (a, b)