SOLUTION: One root of the polynomial equation 0=x^3-4x^2+9x-10 is 1-2i. Find an additional root. A.-2+i B.-1-2i C.2+i D.1+2i

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: One root of the polynomial equation 0=x^3-4x^2+9x-10 is 1-2i. Find an additional root. A.-2+i B.-1-2i C.2+i D.1+2i       Log On


   

Question 452949: One root of the polynomial equation 0=x^3-4x^2+9x-10 is 1-2i. Find an additional root.
A.-2+i B.-1-2i C.2+i D.1+2i
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
The complex conjugate of the given root, 1 + 2i, is also a root. So the answer is d.