posted by Erin. ( im confused) .
Simplfy. with not grouping symbols.
would you factor 9x-12 first? I'm not sure
= 3(2x^2 + 3x - 4)/2
that is all the factoring that can be done,
I don't know what you mean by "grouping symbols"
perhaps they want
=3x^2 + (9/2)x - 6
Simplify the expression 5x − (3x2 + 9x).