Just problems 45 and 47

For each polynomial in Exercises 45-62: (a) use Descartes' rule of signs to determine the possible combinations of positive real zeros and negative real zeros; (b) use the rational zero test to determine possible rational zeros; (c) test for rational zeros; and (d) factor as a product of linear and/or irreducible quadratic factors. 45. P(x) = >+ 6x2 +11x + 6 46. P(x) = x3 - 6x2 + 11x - 6 47. P(x) = x - 7x - x+7 48. P(x) = x - 5x - 4x + 20 49. P(x) = x4 + 6x3 + 3x2 - 10x 50. P(x) = x4 - x3-14x2 + 24x