Find the ordered pair (a,b) of real numbers for which x^2+ax+b has a non-real root whose cube is 1.
Let the root be z.
We have the equation: z3=1
Subtracting 1 from both sides gives: z3−1=0
Factoring out the left-hand side, we get: (z−1)(z2+z+1)=0
Oh, look... It's a quadratic that so happens to be in the form ax2+bx+c=0
This means that the quadratic we are looking for is z2+z+1=0, so the ordered pair is (1,1)