Thread: algebraic expression

the length of a rectangle is (2x-5) and its width is (x+7). Write an algebraic expression showing the amount of fencing needed to enclose the rectangle.

Originally Posted by blame_canada100

the length of a rectangle is (2x-5) and its width is (x+7). Write an algebraic expression showing the amount of fencing needed to enclose the rectangle.

You want the perimeter of the rectangle. Given a length l and a width w this is


You take it from here.

-Dan