Question

1. $(3y^{4}+2y^{3}+y)+(-4y^{3}-5y+2)$

Explanation:

Step1: Remove parentheses

$3y^4 + 2y^3 + y - 4y^3 - 5y + 2$

Step2: Combine like $y^3$ terms

$3y^4 + (2y^3 - 4y^3) + y - 5y + 2 = 3y^4 - 2y^3 + y - 5y + 2$

Step3: Combine like $y$ terms

$3y^4 - 2y^3 + (y - 5y) + 2 = 3y^4 - 2y^3 - 4y + 2$

Answer:

$3y^4 - 2y^3 - 4y + 2$