factor these?

Question

1. 4pq^2r-6p^2q^2-8pq^2r^2

2. x^2-16y^4

3. h^2-8h+16

Answer 1

1. 2pq^2(2r-3p-4r^2)
2. (x+4y^2)(x-4y^2)
3. (h-4)^2.

Keep trying until you can do these yourself. By copying answers without understanding them, you will learn nothing.

Answer 2

Hmmm... sorry, I already helped you with the previous question... you really should try to do some of these yourself.