Question

Solve:
x^4 + 4x^3 - x - 4 = 0

Answer 1

x^3(x+4)-1(x+4)=0
(x^3-1)(x+3)=0
so x=1,-3

Answer 2

the real zeros are 4 and -1 (from the graph of it), plus there are two complex zeros. :/

Answer 3

Yeap, I havenot considered complex numbers here.........

Answer 4

sorry (x+4)

Answer 5

so x=-4

Answer 6

Oh, right. But I still need the complex zeros...

Answer 7

-0.5+0.87i
-0.5-0.87i

Answer 8

Might you have the exact number/fraction for that .87?