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

Question

Mathematics

Jaylon Chan

6 September, 17:18

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

+3

Answers (1)

Know the Answer?

Kamren · Answer 1

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

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