The GCF of anything compared to itself is itself.
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First take out -3x to make-3x(x2+11)If you're not using imaginary numbers, then you're done. Otherwise factor x2+11 using the sum of two squares rule.-3x(x-sqrt(11)i)(x+sqrt(11)i)
-x(x2 - 2)(x2 + 3)
The GCF is 2xy.
x2-3x+2.25 is the same as 4x2-12x+9 and is (2x-3)(2x-3) when factored
(x - 2)(x - 1)