Answer:

Explanation:
Given polynomial:

Add 15 to both sides:

Divide both sides by -1:

To factor a quadratic in the form
find two numbers that multiply to ac and sum to b.


Therefore, the two numbers are: 20 and -9
Rewrite b as the sum of these two numbers:

Factorize the first two terms and the last two terms separately:

Factor out the common term (3n+5):
