Question

18r^2-20r+2

Answer 1

factor ?
18r^2 -18r - 2r +2
18r(r-1) -2(r-1)
(18r-2)(r-1)
2(9r-1)(r-1)

Answer 2

thank you and don't you mean r-2 at the end.

Answer 3

no, i took out 2..
see instead of 18r i have 9r and instead of the 2 i have 1

Answer 4

but it is not necessary you could leave it : (18r-2)(r-1)