Asked by isha

factorize z^4 + 2z^3 - 2z^2 + 8 into linear factors
Answered by Reiny
does not appear to factor, check your spelling

http://www.algebrahelp.com/calculators/expression/factoring/calc.do?expression=x%5E4+-+2x%5E3+-+2x%5E2+%2B+8
Answered by isha
no, i entered it correctly. the unit is complex numbers and polynomials