Problema Solution
Find all complex zeros for the following polynomial function. Please show all of your work.
f(x)=x^3-5x^2+49x-245
Answer provided by our tutors
f(x)=x^3-5x^2+49x-245=0
=> (x-5)(x^2+49)=0
=> x=5 or x^2=-49 => x=-7i or x=7i
so roots are: 5, 7i and -7i