Problema Solution
A photograph has a length that is 3 inches longer than its width, x. So its area is given by the expression x(x+3) square inches. If the area of the photograph is 70 square inches, what is the length of the photograph?
The length of the photograph is _____ inches.
Answer provided by our tutors
Width = x
Length = x + 3
Area = x(x + 3)
x(x + 3) = 70
........
click here to see the eqa\equation solved for x
........
x = 7 in
We need to ignore the negative solution -10 since the length can not be negative number.
Length = 7 + 3
Length = 10 in
The length of the photograph is __10__ inches.