Answer:
\((2x+5)in\)
Step-by-step explanation:
we know that
The perimeter of a square is equal to
\(P=4b\)
where
b is the length side of the square
In this problem we have
\(P=(8x+20) in\)
so
\(4b=(8x+20)\)
solve for \(b\)
Divided by \(4\) both sides
\(4b/4=(8x+20)/4\)
\(b=(2x+5)in\)
