Question

For what values of a and b will these two expression be equal?
(a+b)^2
and
a^2 + b^2

Answer 1

0

(a+b)^2=a^2+b^2
a^2+2ab+b^2=a^2+b^2
2ab=0
then: a=0 and b=0

Answer 2

if either a or b is equal to 0,
(a+b)^2 and a^2 + b^2 will have the same values.