Question

a^2 + b^2 is equal to What?

Answer 1

We know,

(a + b)² = a² + b² + 2ab

Then,

(a + b)² - 2ab = a² + b²


I hope this will help you

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Answer 2

here is your Answer brother
______________________

➡ a^2+b^2= (a+b)^2–2ab

Or

➡ (a-b)^2+ 2ab

✌✌☺☺