SOLUTION: How do I solve this problem? The length of a rectangle is 3x-4 and the width is x. I know that it is A-lxw I dont know how to set up the problem or solve it with x

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: How do I solve this problem? The length of a rectangle is 3x-4 and the width is x. I know that it is A-lxw I dont know how to set up the problem or solve it with x      Log On


   

Question 416538: How do I solve this problem?

The length of a rectangle is 3x-4 and the width is x.
I know that it is A-lxw
I dont know how to set up the problem or solve it with x
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Area = Length * Width

A = LW

A = (3x-4)x

A = x(3x-4)

A = 3x^2-4x


So the expression for the area is 3x^2-4x


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