## Intermediate Algebra (6th Edition)

6$x^{2}$y - 12x + 12
The perimeter is found by adding all of the sides together: (2$x^{2}$y - 6x + 1)(2) + ($x^{2}$y + 5)(2) = 4$x^{2}$y - 12x + 2 + 2$x^{2}$y + 10 = 6$x^{2}$y - 12x + 12