Question

Give an actual answer please

Rhett decides to build a square room for his movie and music collection. If the area of the room is 4x2 + 28x + 49 square feet, what is the length of one side of the room?
(7x + 2) feet
(2x + 7) feet
(2x − 7) feet
(7x − 2) feet

Answer 1

Hello There!!

Your best answer choice will be is A.

(2x + 7) feet.

Because, All you have to do for this problem is factor the equation. I would be hard to explain on this so I recomment you watch a video on it. If you did not know how to factor, you could have muliplied each of the answers by themselves to determine the correct answer because it is a square.

Hope This Helps!!

Answer 2

(2x+7)

Explanation:

4x^2 + 28x + 49

This is a perfect square trimonial

a^2 + 2ab + b^2 = (a+b)^2

(2x)^2 + 2 * 2x*7 + 7^2

( 2x+7)^2