Answer:
D
Step-by-step explanation:
5w(4w²-2w) +3w(-2w² + 4w)=[ 5w*4w²] - [5w*2w] + [3w*(-2w²)] + 3w*4w
= 20w³ - 10w² - 6w³ + 12w² {bring the like terms together}
= 20w³ - 6w³ - 10w² + 12w²
= 14w³ + 2w²
