Question

expand and simplify :)
(xy+2)(xy-2)-y^2(2x+1)^2

Answer 1

(xy)^2 - 4 - y^2( 4x^2 +4x +1)
(xy)^2 -4 - 4(xy)^2 - 4xy^2 - y^2
-3(xy)^2 - 4xy^2 - y^2 - 4

Answer 2

(-3x^2-4x-1)y^2-4

Answer 3

\[-3x^2y^2 -4xy^2 -y^2 -4\]