Question

Expand (a+b)2
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Answer 1

Answer:

Here's your answer

Step-by-step explanation:

Expansion of (a ± b)2

= a2 - 2ab + b2. Therefore, (a + b)2 + (a - b)2. = a2 + 2ab + b2 + a2 - 2ab + b2.

= 2(a2 + b2), and. (a + b)2 - (a - b)2. = a2 + 2ab + b2 - {a2 - 2ab + b2}

= 4ab. Corollaries: (i) (a + b)2 - 2ab = a2 + b