Answer:
9w² - 18w
or
9w(w - 9)
Explanation:
Let's start by applying the distributive property to all of the expressions:
5w(2w - 7) + w(3w + 8) - 4w² + 9w
10w² - 35w + 3w² + 8w - 4w² + 9w
Now, combine the like terms:
9w² - 18w
You could stop there, but if you wanted to, you could factor out a 9 and a w:
9w(w - 9)
Hope that helps :) If you have any questions, please comment on this thread! I'm more than willing to help!