14x2-7x2-16
7x2-16
(this can't be simplified any more)
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x2 - 2x - 14 doesn't factor neatly. Applying the quadratic formula, we find two real solutions: 1 plus or minus the square root of 15x = 4.872983346207417x = -2.872983346207417
If that's +14x + 3, the answer is (2x + 3)(4x + 1)
7(x + 3)(x - 3)
(x - 7)(x2 + 7x + 49)
x2-7x-44 (x-11)(x+4)