Question

simplify: 1) (a + b)^2 - ( a- b)^2 . 2) (a + b)^2+(a-b)^2.​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

1)  4ab

2) 2(a^2+b^2)

Step-by-step explanation:

1)  (a+b)^2-(a-b)^2

a^2+b^2+2ab-(a^2+b^2-2ab)

a^2+b^2+2ab-a^2-b^2+2ab

2ab+2ab

4ab

2)  (a+b)^2+(a-b)^2

a^2+b^2+2ab+a^2+b^2-2ab

2(a^2+b^2)

Hope it helps....