# Equation problem...Lost on it..

• Jan 31st 2010, 04:31 PM
victorfk06
Equation problem...Lost on it..
Solve the equation and express each solution in the form of A + Bi
X^3 – A =0
• Jan 31st 2010, 04:36 PM
VonNemo19
Quote:

Originally Posted by victorfk06
Solve the equation and express each solution in the form of A + Bi
X^3 – A =0

$x=\sqrt[3]a+0i$?
• Feb 1st 2010, 04:41 AM
HallsofIvy
That's one solution!

Now, victorfk06, divide $x^3- A$ by $x- \sqrt[3]{A}$ to get the remaining, quadratic, equation. Use the quadratic formula (or complete the square) to solve for the other two roots.