show that 1+i is a root of the cubic equation 3z^3-5z^2+27z-45=0, find the other two roots

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter11: Rational And Irrational Numbers
Section11.9: Multiplication Of Binomials Containing Radicals
Problem 43WE
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show that 1+i is a root of the cubic equation 3z^3-5z^2+27z-45=0, find the other two roots

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