Write an equation for a rational function with:

Vertical asymptotes at x = 4 and x = 2

x intercepts at x = -5 and x = 5

y intercept at 9

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle