Find all the zeros (both real and complex) of
f(x)= x^5 - 3x^4 + 12x^3 - 28x^2 + 27x -9© BrainMass Inc. brainmass.com March 4, 2021, 5:38 pm ad1c9bdddf
I hope you are familiar with division algorithm.
So first thing I did was plug in x=1. The sum of the coefficients is zero so f(1)=0 ...
The roots in complex equation are calculated.