What is the expansion of (a + b)2?


Answer:

a2 + 2ab + b2

Step by Step Explanation:
  1. Let's write (a + b)2 as: (a + b)(a + b)
    = (a + b)a + (a + b)b
    = a2 + ab + ab + b2
    = a2 + 2ab + b2
  2. Therefore the expansion of (a + b)2 is a2 + 2ab + b2.

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