Question

the value of (x+y)² - (x-y)²​

Answer 1

Step-by-step explanation:

apply a^2 - b^2 = (a+b) (a-b) identity :-

(x+y+x-y) (x+y-x+y)

(2x) (2y) = 4xy

hope this will help u

Answer 2

Answer:

(x+y) ^2- (x-y) ^2

=x^2+ y ^ 2+2xy -(x^2+y^2-2xy)

=4xy