PDA

View Full Version : Solve the cubic formula for x

Strafespar
Mar25-10, 04:55 PM
How would you go about solving ax^3+bx^2+cd+d=0 for x. Please step by step! Thanks!
jbunniii
Mar25-10, 06:04 PM
How would you go about solving ax^3+bx^2+cd+d=0 for x. Please step by step! Thanks!

It's pretty longwinded but standard. See here, for example:

http://en.wikipedia.org/wiki/Cubic_function
Strafespar
Mar25-10, 06:15 PM
In the X_{1} example, does x=y-b/3a?