<PRE><B>Question 132661</B>
since you know the total area is 20 and you know that one side of the mural is 2m longer you need to set an equation up

x = first side
x+2 = side 2m longer
20 = total area

x(x+2)=20
x^2 + 2x = 20
x^2 + 2x - 20 = 0

youll need to use the quadratic equation for this


*[invoke solve_quadratic_equation 1, 2, -20]

dont worry about the graph if you see it

you will get two answers and since you are dealing with lengths the answer that was negative wont work making 3.582 your answer for x 

x = 3.582
x+2 = 5.582
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