SOLUTION: The length of a rectangle is 7 more than twice its width. Its Area is 4. Find the width of the rectangle

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Question 767049: The length of a rectangle is 7 more than twice its width. Its Area is 4. Find the width of the rectangle
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
width = x
length = 7 + 2x
Area = length * width
4 = (7 + 2x) * x
4 = 7x + 2x^2
2x^2 + 7x - 4 + 0
(2x - 1)(x + 4) = 0
x + 4 = 0
x = - 4 (No answer x<0)
2x - 1 = 0
2x = 1
x = 1/2
Width = 1/2 units
Length = 8 units.
Hope this helps.
:-)