Question

what is a² + b²= first answer will mark as Brainliest answer​

Answer 1

Answer:

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

Step-by-step explanation:

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Answer 2

Answer:

According to Pythagorean Theorem , in a right angled triangle,

a²+b²=c²

c is the length of side opposite to the right angle i.e, hypotenuse.

a and b are other 2 sides of right angled triangle.

OR

According to algebraic identities,

a²+b²= (a+b)²-2ab

or

a²+b²=(a-b)²+2ab