Answer:
s = (4x+9)
Explanation:
Given that,
The area of a square room is
.
We need to find the length of one side of the room.
The formula for the area of the square is given by :
![A=s^2](https://img.qammunity.org/2022/formulas/mathematics/high-school/vdkweq6pqd6ovxo0xll12y0dscgigy146i.png)
Where
s is the length of one side
So,
![s=√(A)\\\\s=√(16x^2+72x+81)\\\\s=√((4x+9)^2)\\\\s=(4x+9)](https://img.qammunity.org/2022/formulas/mathematics/college/pdjgj5voaay20o89752hsktwthj6f05bss.png)
So, the length of one side of the room is equal to (4x+9).