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

Question

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

anonymous · Answer

answer only please

anonymous · Answer

To get 4x^2 we have to square 2x, so it can't be 1 or 4. It can't be the third one because when you square it it's negative, so it's the second one: (2x+7)