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The area of a rectangle is y^2-4y-45 square inches. Which expression represents a possible length for the rectangle? A y+5 B y+9 C y-5 D y-45

The area of a rectangle is y^2-4y-45 square inches. Which expression represents a possible length for the rectangle? A y+5 B y+9 C y-5 D y-45
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The area of a rectangle is y^2-4y-45 square inches. Which expression represents a possible length for the rectangle?

A y+5
B y+9
C y-5
D y-45

asked
User Fabio Phms
by
8.3k points

1 Answer

4 votes
1. Ask: Which two numbers add up to -4 and multiply to -45?
-9 and 5

2. Rewrite expression using the above
(y-9)(y+5)

3. Your answer:
Your answer will be a. Have a nice day :D
answered
User Vladimir Amiorkov
by
8.4k points
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