Question

If two zeroes of.a.polynomial x^3-4x^2
-3x +12 are root3.and -root3 .find it's third zeroes?

Answer 1

here is your answer x=4

Answer 2

$(x - \sqrt{3} )(x + \sqrt{3) } \\ {x}^{2} - 3 \\ given \: \: equation \: {x}^{3} - 4x {}^{2} - 3x + 12$

divide x^2 -3 by given equation

then you will get q(x).

then by the factor therom factorised it .

then you will get third zero