Question

x²+y²=(x+y)²-2xy find out​

Answer 1

Answer:

We know that,

(x+y)^2=x^2+y^2+2xy [identity]

We will transpose 2xy to LHS

and hence we will get,

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

Hope it helps☺️

Answer 2

Answer:

x²-y²=(x+y)²-2xy

Step-by-step explanation:

x²-y²    ⇒ (x-y) (x-y) = x²-xy-xy+y²

           ⇒ x²+y²+(-xy-xy)

           ⇒ x²+y²-2xy

                                    Hence, proved

        This is the answer from my point of view