(x - 1)(x - 14)
(x-11)(x-4)
(x - 6)(x - 9)
(x - 4)(x - 11)
(x+7)(x+2)
x2+12x+28Improved Answer:--x2+12x+28 = (-x+14)(x+2) when factored
-(x - 7)(x + 2)
(x-6)(x-9) I did that by factoring 54 until I found two numbers that added up to 15.
(x - 14)(x - 2)
That factors to (x - 14)(x - 2)
3x2 - 15x + 42 = 3*(x2 - 5x + 14) which cannot be factorised further.
A trinomial.