1)Write a quadratic equation with integer coefficients that has -4+7i(Radical 3) and -4-7i(Radical 3) as its roots.
2) Solve your answer to part 1 using the quadratic formula verifying your answer
1) [x - (root1)][x - (root2)] = 0
Substitute in the two roots and multiply it out.
2) You should be able to do your own verification using the quadratic formula,
x = [-b +/- sqrt(b^2/4ac)]/(2a)
a,b and c are the coefficients in your quadratic equation from part 1.