If you mean 5x^2 -125 then it is 5(x^2 -25) when factored
5x2 + 3x - 1 does not have rational factors.
5x2-46x+9 = (5x-1)(x-9)
5x2 + 20x = 5x (x + 4)
5x2-18x+9 = (5x-3)(x-3)
x(5x - 4)
With great difficulty!
5x2
5x2 + x - 6 = (5x + 6)(x - 1) 5x2 - x - 6 = (5x - 6)(x + 1)
The GCF is 5x2
5x2
340 34x10 2x17 5x2