That doesn't factor neatly. Applying the quadratic formula, we find two imaginary solutions: (-11 plus or minus the square root of -31) divided by 4.
x = -2.75 + 1.3919410907075054i
x = -2.75 - 1.3919410907075054i
where i is the square root of negative one.
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Assuming the question is written as: x2+11x-12 This would factor to: (x+12)(x-1)
x(6x - 11)
(x + 13)(2 - x)
x2 - x + 30 does not have any factors. If on the other hand you wanted to factor out: x2 - x - 30 Then it can be done as follows: = x2 - 6x + 5x - 30 = x(x - 6) + 5(x - 6) = (x + 5)(x - 6)
x2 + 18x - 50 does not have rational factors.