Question

simplify : (h+y) (2h+y) + (h+ 2y) (h-y)​

Answer 1

Answer:

3h^2-y^2+4hy

Step-by-step explanation:

2h^2+y^2+hy+2hy+h^2-hy+2hy-2y^2

By cancelling the same terms with opposite sign we get the answer