Question

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

a. 2xy b. 4xy c. 2(x2 + y2 ) d. x4 + y4 ​

Answer 1

Answer:

2(x2+y2) is answer mark me as brainliest please

Answer 2

Answer:

D

Step-by-step explanation:

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

x^2+y^2+2xy+x^2+y^2-2xy

x^4+y^4