x2 - 13x + 30 = (x - 3)(x - 10).
In case you are provided with a list that you forgot to include with your question, then any of the following is a possible factor:
x - 3; x - 10; 3 - x; or 10 - x.
(x - 5)(x - 8)
(x - 9)(x - 4)
vbh
(x + 10)(x + 3)
6x2 + 13x + 2 = (6x + 1)(x + 2).
(x - 5)(x - 8)
(x - 9)(x - 4)
vbh
x-4 is the correct answer for Apex
(x + 10)(x + 3)
(x - 10)(x - 3)
(5x - 4)(3x + 5)
6x2 + 13x + 2 = (6x + 1)(x + 2).
(5x - 4)(3x + 5)
(x - 6)(x - 7)
(x + 5)(x + 8)
X^2 - 13X + 30 = 0 (X-3)(X-10) easy inspection problem