Question

(x+y) ²-(x-y)²​ = ???????????????????????

Answer 1

Answer:

4xy is the real ans of this question dear mate

Step-by-step explanation:

mark me  dear

Answer 2

Answer:

•  $(x+y)^{2}-(x-y)^{2}$= $4xy$

Step-by-step explanation:

Given : The expression is $(x+y)^{2}-(x-y)^{2}$

To find : The value of the above expression.

Solution :

• The given expression is,  $(x+y)^{2}-(x-y)^{2}$
• We have to find the value of the given expression.
• We know the algebraic identities that

     $(a+b)^{2}=a^{2} +2ab+b^{2}$  and

     $(a-b)^{2} = a^{2} -2ab+b^{2}$

• Using these identities, the given equation becomes

     $(x+y)^{2}-(x-y)^{2}$ = $(x^{2} +2xy+y^{2})-(x^{2} -2xy+y^{2} )$

                               = $x^{2} +2xy+y^{2} -x^{2} +2xy-y^{2}$

                               = $4xy$

• ∴   $(x+y)^{2}-(x-y)^{2}$= $4xy$