Answer:
P = 26x^4 + 7x^2 + 2x + 11
Explanation:
Perimeter of hexagon
(6x^4-7x^3+3) + (-3x^2+14x-19) + (12x^4-x^3+15) + (13x^4-x^2-x+7) + (8x^3+9x^2-11x) + (-5x^4+2x^2+5)
6x^4 - 7x^3 + 3 - 3x^2 + 14x - 19 + 12x^4 - x^3 + 15 + 13x^4 - x^2 - x + 7 + 8x^3 + 9x^2 - 11x - 5x^4 + 2x^2 + 5
combine like terms
26x^4 + 7x^2 + 2x + 11