Which shows the factored form of x2 – 12x – 45?
(x + 3)(x – 15)
(x − 3)(x – 15)
(x + 3)(x + 15)
O (x - 3)(x + 15)

For each polynomial, determine the degree and write the polynomial in descending order. a. –4x^2 – 12 + 11x^4 b. 2x^5 + 14 – 3x^4 + 7x + 3x^3