SOLUTION: The length of a rectangle is 4 more than twice the width, x. Express the area of the rectangle in terms of x.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: The length of a rectangle is 4 more than twice the width, x. Express the area of the rectangle in terms of x.      Log On


   

Question 660602: The length of a rectangle is 4 more than twice the width, x. Express the area of the rectangle in terms of x.
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
l = 4 + 2x
a = lx
Substitute the first equation in the second
a = (4 + 2x)x
a = 4x + 2x^2