What's (2x-4) (6+5x) As a polynomial?

10x² - 8x - 24

Step-by-step explanation:

Given

(2x - 4) (6 + 5x)

Each term in the second factor is multiplied by each term in the first factor, that is

2x (6 + 5x) - 4 (6 + 5x) ← distribute both parenthesis

= 12x + 10x² - 24 - 20x ← collect like terms

= 10x² - 8x - 24

10x2-8x+4 would be the answer