If that's -3, the answer is (4x + 1)(x - 3)
If that's +3, it gets ugly in a hurry.
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If the missing operational signs are minuses, that factors to (x - 3)(4x + 1)
If the missing operational signs are pluses, it gets ugly in a hurry.
Assuming the question is written as: x2+11x-12 This would factor to: (x+12)(x-1)
66x^3 - 36x^2 = 6x^2(11x - 6) 55x - 30 = 5(11x - 6) 66x^3 - 36x^2 + 55x - 30 = (6x^2 + 5)(11x - 6)
It is not possible to be certain about it being the "greatest" common factor, because 2 or 3 or 6 may be a factor of x, but the general solution for practical purposes is: 11x = 11*x and -66 = 11*(-1)*2*3 so [g]cf is 11.
x(6x - 11)
x2-3x+2.25 is the same as 4x2-12x+9 and is (2x-3)(2x-3) when factored