How do you factor the expression 18r2+12ry−3xr−2xy?
1 Answer
Apr 5, 2016
(3r + 2y)(6r - x)
Explanation:
group the terms into 2 'pairs'
hence: [
18r2+12ry]+[−3xr−2xy] now factor each pair:
6r(3r + 2y) - x(3r + 2y)
There is a common factor of (3r + 2y) in each pair.
thus : (3r + 2y )(6r - x)