Algebra-1

Step 1: Distribute the parentheses.
(2x³ − 4x² + 5x − 3) + (7x³ + 6x² − 2x + 8) is the same as 2x³ − 4x² + 5x − 3 + 7x³ + 6x² − 2x + 8.

Step 2: Combine like terms.
Combine the terms with x³: 2x³ + 7x³ = 9x³.

Combine the terms with x²