Question 621337
I just solved another very similar problem. First, know that the other root will be the complex conjugate of the given root. The complex conjugate of
{{{(-2/3)i}}} (or {{{0 + (-2/3)i}}}) is
{{{(2/3)i}}} (or {{{0 + (2/3)i}}}).<br>
Then <A <HREF="http://www.algebra.com/algebra/homework/quadratic/Quadratic_Equations.faq.question.621340.html">click here</A> to see the other solution. It should help you figure out this problem.