math
posted by tan on .
Write a quadractic equation having given equations?
9,9i

9i your welcome young solder

if you mean the given roots, you are out of luck if you want real coefficients.
If you have a typo and meant 9+9i, then the other root is 99i, so the quadratic is
(x(9+9i))(x(99i))
= ((x9)+9i)((x9)9i)
= (x9)^2 + 9^2
= x^2  18x + 162