Question

a^2=b^2= a^2+2ab+b^2

Answer 1

Answer:

what is the ques

which identity is this?????

Answer 2

Answer:

it's a² + b² = a² + 2 ab+b²

let a=1 b=2

then,

1²+2²=1²+2(1*2)+2²

1+4=1+4+4

5=9