Answer:
2
Step-by-step explanation:
The answer is 2 because you need to simplify
a=1
b=-5
c=2
The length of one side of the square room of Rhett for his movie and music collection is (2x+7) feet.
<h3>What is area of square?</h3>
Area of square is the square of its sides length. It can be given as,
![A=a^2](https://tex.z-dn.net/?f=A%3Da%5E2)
Here,
is the length of the side of the square
Rhett decides to build a square room for his movie and music collection. The area of the room is given by the polynomial equation as,
![A=(4x^2 +28x +49)\rm ft^2](https://tex.z-dn.net/?f=A%3D%284x%5E2%20%2B28x%20%2B49%29%5Crm%20ft%5E2)
Find the factors of the above equation using the split the middle term method as,
![A=4x^2 +28x +49\\A=4x^2 +14x+14x +49A=x(2x+7)+7(2x+7)\\A=(2x+7)(2x+7)\\A=(2x+7)^2\rm ft^2](https://tex.z-dn.net/?f=A%3D4x%5E2%20%2B28x%20%2B49%5C%5CA%3D4x%5E2%20%2B14x%2B14x%20%2B49A%3Dx%282x%2B7%29%2B7%282x%2B7%29%5C%5CA%3D%282x%2B7%29%282x%2B7%29%5C%5CA%3D%282x%2B7%29%5E2%5Crm%20ft%5E2)
Compare it with the area of the square we get,
![a=(2x+7)\rm ft](https://tex.z-dn.net/?f=a%3D%282x%2B7%29%5Crm%20ft)
Hence, the length of the square room of Rhett for his movie and music collection is (2x+7) feet.
Learn more about the area of square here;
brainly.com/question/1658516
Answer:
Step-by-step explanation:
x = 1
Step 1: Simplify both sides of the equation.
20x−−2x−16=6
20x+2x+−16=6
(20x+2x)+(−16)=6(Combine Like Terms)
22x+−16=6
22x−16=6
Step 2: Add 16 to both sides.
22x−16+16=6+16
22x=22
Step 3: Divide both sides by 22.
22x
22
=
22
22
Answer:
26 ft
Step-by-step explanation: