Question

Recall the following identitie
1. (a+b)2 =
.
(a-b)2 =
(a+b) =
(+a) (+b) =​

Answer 1

1. a^2 + 2ab + b^2
2. a^2 - 2ab + b^2
3. a^2 - b^2

Answer 2

Step-by-step explanation:

1. (a+b)² = a²+ b²+ 2ab
2. (a-b)² = a²+b²-2ab
3. (a+b)(a-b) = a²-b²
4. a²+ b² = (a+b)² - 2ab

= (a-b)² + 2ab

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