Write a factored form for each trinomial.

a. x2 + 12x + 35
x≥ - 12x + 35
x≥ + 12x - 35
x≥ - 12х - 35

b. 2x2 - 9x +9
2x2 - 3x - 9
2x2 + 3x - 9
2x2 + 9x + 9

c. x^2 + 5x + 6

(x + 2)(x + 3)

d. 3x^2 - 7x - 6
(3x + 2)(x - 3)