the complete question in the attached figure
we know that
[area of rectangle]=b*h
b=(x+2)
h=(2x+2)
Area=130 m²
then
130=(x+2)*(2x+2)--------> 2x²+2x+4x+4-130=0--------> 2x²+6x-126=0
the answer Part a) is
the equation to find x is [2x²+6x-126=0]
b.) solve the equation by completing the square
130=(x+2)*(2x+2)
using a graph tool
see the attached figure
the solution is
x=6.58 m
the answer Part b) is
(x + 2)(2x + 2) = 130; x = 6.58 m
