Question

Please can anybody explain and help me understand these identities:
a²+b²
a²-b²
(a-b)²

❌No irrelevant Answers please❌​

Answer 1

Step-by-step explanation:

a²+b²=(a+b)²-2ab

or (a-b)²+2ab

a²-b²=(a+b)(a-b)

(a-b)²=a²+b²-2ab