Using that 3 is the real root of the cubic equation x^3-27=0, show that the complex roots of the cubic satisfy the quadratic equation x^2+3x+9=0.
hence or otherwise find the three cube roots of 27 giving your answers in the form a+ib
thankyou!
Using that 3 is the real root of the cubic equation x^3-27=0, show that the complex roots of the cubic satisfy the quadratic equation x^2+3x+9=0.
hence or otherwise find the three cube roots of 27 giving your answers in the form a+ib
thankyou!