Question

http://i1142.photobucket.com/albums/n608/nancylam67/1416.jpg
do 16 only

Answer 1

First factor out an x
Then factor { -4*-4 = 16, -4 -4 =-8}
leaving
x(x^2-4)^2 = 0
x=0
x= +-2
its a degree of 5 so there are 2 imaginary roots