The complex roots of an equation is any solution to that equation which cannot be expressed in terms of real numbers. For example, the equation 0 = x² + 5 does not have any solution in real numbers. But in complex numbers, it has solutions.
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-0.5 + sqrt(0.75)i, and -0.5 - sqrt(0.75)i.
It has two complex roots.
Sir Isaac Newton.
There are 2 roots to the equation x2-4x-32 equals 0; factored it is (x-8)(x+4); therefore the roots are 8 & -4.
In polar coordinates, p = 1 - sin(theta)