1)3x^2 + 4x + 5x^2 - 5y
2) (4x - 2y) - (2x + 5y)
3) 3x^3(4x^2)
4) 5 x cubed y to the fourth z all divided by 10 x y squared z cubed
5) (-8a^3b^4)^2
6) (x + 6)(x - 6)
7) (2x - 7)^2
8)(2x + 5)(3x - 7)
9) 5 x cubed y plus x y to the fourth plus 2xy all divided by xy
10) 16ab + 4a b to the fourth plus 24 b all divided by 4b