Question

Describe how you would verify the zeros of a function. Use the description to verify the problem x4 - x3 + 7x2 - 9x - 18

Answer 1

Also I have to find the polynomial function for an equation that has an imaginary number gor one of its roots...
"Find the polynomial function with roots 11 and 2i"

Answer 2

do you mean: x^4 - x^3 + 7x^2 - 9x - 18 ?
Then x= -1 , 2 , 3i and -3i

Answer 3

Yes, exactly what I mean.