Algebra-1

Step 1: Distribute the parentheses.
(3y² + y³ − 5) + (- 4y² − 4y + 2y³ + 8) is the same as 3y² + y³ − 5 - 4y² − 4y + 2y³ + 8.

Step 2: Combine like terms.
Combine the terms with y³: y³ + 2y³ = 3y³.

Combine the terms with y²: 3y² - 4y² = -y².

Combine the terms with y: -4...