Question

( 1 - x square ) (1 minus y square )plus 4 x y ​

Answer 1

Answer:

(1-x²) (1-y²) 4y = 4y-4x²y-4y³+4x²y³

Answer 2

Answer:

(1-×^2)(1-y^2)+4(y)

(1-y-×+y)^2 +4y

(1-y-×+y)^2 +2y^2

(1-×+2y)^2