Problem 16.(adsbygoogle = window.adsbygoogle || []).push({});

Find a cubic polynomial with integral coefficients having 3i and -6 as zeros.

This is what I have done:

(x-r1)(x-r2)

(x-3i)(x+6)

x^2-6x-3ix+(-18i)

x^2-(6-3i)x+(-18i)

Is this right????

Problem 18.

If 2 is a zero of the polynomial P(x)=3x^2+kx-8, find k.

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# Homework Help: Polynomial problems

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