(a + b)^2 + (a - b)^2
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Answer:
2a^2 + 2b^2
Step-by-step explanation:
= (a+b)^2 + (a-b)^2
= (a^2 + 2ab + b^2) + (a^2 - 2ab + b^2) ( Using the identity)
= a^2 +2ab ^ b^2 + a^2 - 2ab + b^2 ( Remove the brackets)
= a^2 + a^2 + b^2 + b^2 + 2ab - 2ab ( Aling it together so that it becomes easier to simplify )
= 2a^2 + 2b^2 + 0
= 2a^2 + 2b^2
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