Question 33927
x^2-2x-4
(x-2)(x^2+2x+2)
Using the quadratic formula on x^2+2x+2 get:
x=[-2+-sqrt(4-8)]/2
x=-1+2i or x=-1-2i
Factors are (x-2)(x+1-2i)(x+1+2i)
x^4+8x^2+16
(x^2+4)^2
(x+2i)^2(x-2i)^2
Cheers,
Stan H.