Posted by Celest on Wednesday, July 31, 2013 at 4:14pm.
The sum of 5x^2 + x and 2x^2  3x  1 ?

PreAlgebra  DrBob222, Wednesday, July 31, 2013 at 4:23pm
5x^2 + x 2x^2 3x 1 =
Add (algebraically) the common terms; i.e.,
5x^22x^2 = 3x^2
x3x = 2x and the answer is
3x^2  2x  1.