Question

(x + y)² – (x - y)²​

Answer 1

Answer:

$x ^{2} + y ^{2} + 2xy -( x ^{2} + y ^{2} - 2xy)\\ =4xy$I hope you understand my answer.

Answer 2

Answer:

x−y)2+(y−x)2=x2−2xy+y2+y2+x2−2xy

=2(x2+y2)−4xy=2[(x2+y2)]−2xy

=>=2[x2+y2−−−−−−√−2xy−−−√][x2+y2−−−−−−√+2xy−−−√