If that's -39x, it factors to 3(x - 3)(4x - 1)
25x + 35x + 9 is 60x + 9, which factors to 3(20x + 3)
(x + 9)(x - 1)
9(2x + 5)
(2x+3)(x+3)
(x + 9)(x - 1)
When factored it is: (x+9)(x-1)
They're (3) and (5x + 9).
-8
That is 27 x 9 = 243
That factors to (x + 3)(x + 3)
(x+9)(x+4)
189