Answer
7$y^{3}$ + 2$y^{2}$ -y +2
Work Step by Step
(7$y^{3}$+5y - 1) + (2$y^{2}$ - 6y +3)
The like terms are 7$y^{3}$ , 2$y^{2}$ , 5y and -6y (both containing y) and the constant terms -1 and 3.
We begin by grouping these pairs of like terms.
=7$y^{3}$ + 2$y^{2}$ +(5y - 6y) +(-1+3)
= 7$y^{3}$ + 2$y^{2}$ -y +2
