Question

algebra 2 help please

Answer 1

solutions of it are 2,2w,2w^2
w is the cube root of unity

Answer 2

this is algebra 2??

Answer 3

\[x^3-8=0\]
\[(x-2)(x^2+2x+4)=0\] one solution is \(x=2\) the other two you get from the quadratic formula to solve
\[x^2+2x+4=0\]

Answer 4

or complete the square, which is easiest in this case
\[x^2+2x+4=0\]
\[x^2+2x=-4\]
\[(x+1)=-4+1=-3\]
\[x+1=\pm\sqrt{-3}=\sqrt{3}i\]
\[x=-1\pm\sqrt{3}i\]