SOLUTION: A rectangular swimming pool has an area of 18x^2 + 33x - 40. Find an expression for the perimeter of this pool.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: A rectangular swimming pool has an area of 18x^2 + 33x - 40. Find an expression for the perimeter of this pool.       Log On


   

Question 681762: A rectangular swimming pool has an area of 18x^2 + 33x - 40.
Find an expression for the perimeter of this pool.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
rectangular swimming pool has an area of
A = 18x^2 + 33x - 40.
this will factor to
A = (6x - 5)(3x + 8)
:
let L = 6x - 5
let W = 3x + 8
:
P = 2L + 2W
P = 2(6x-5) + 2(3x+ 8)
P = 12x - 10 + 6x + 16
combine like terms
P = 18x + 6