If that's +14x + 3, the answer is (2x + 3)(4x + 1)
As written, that equals 325 - 14x which is in its simplest form.
x2+14x+40 = (x+4)(x+10) when factored
x2 - 14x + 49(x - 7) (x - 7)
x2 - 14x + 45 = (x - 5)(x - 9).
21x3-35x2+14x = 7x(3x2-5x+2)
8x^2 + 14x + 3 factors to (4x + 1)(2x + 3)
(2x+3)(2x+4)
(4x + 1)(2x + 3)
3x^2 -14x +15 = (3x-5)(x-3)
(x - 2)(5x + 24)
(x - 3)(x - 11)