Question

If
a=3 and b=4 verify
the Identity
(a+b)
a²+ 2ab +6²​

Answer 1

(a+b)^2=(3+4)^2
=(7)^2
=49

Now applying the formula
(a+b)^2=a^2+2ab+b^2
=3^2+2(3*4)+4^2
=9+24+16
=49
Hence verified