P(x) = - x^4 + 3x^3 - 5x^2 + 5x + 12; Q(x) = - 5x^5 + x^3 + 2x^2 + 7x - 14

P(x) = - x4+3x3-5x2+5x+12
Q(x) = -5x5 +x3+2x2+7x-14