Question

what is a2+b2 = ?
what is the expansion of the above ?
i know a2-b2=(a-b)(a+b)

Answer 1

there is no such equation for thisbut we can write that ,a^2+b^2=[a+b]^2-2ab

Answer 2

Answer:

As we know,

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

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