Question

Combine the like terms to simplify the expression:

5 + 7 + 15xy2 + 9y3 + 10x –13xy2 – 3x – 8y3

Answer 1

Add your constants (5 and 7), add your Xs (10x and -3x), add your xy^2 (15xy^2 and -13xy^2) and add your y^3 (9y^3 and -8y^3).

Answer 2

\(\bf 5 + 7 + 15xy^2 + 9y^3 + 10x -13xy^2 - 3x - 8y^3\\ \quad \\
5 + 7 \color{green}{+ 15xy^2-13xy^2} \color{red}{+ 9y^3 - 8y^3}\color{blue}{+ 10x - 3x} \)