Question

Can anyone tell the process of solving a cubic equation
like,ax3+bx^2+cx+d=0
when the roots are real?
when one root is real ?
when two roots are real?
If anyone know ,kindly let me know or give me a link where I can get the answers?

Answer 1

Here's a link to solving cubic equations: http://1728.org/cubic2.htm
That is a method I thought up myself. It has the advantage of being easy to follow and it always works.
If you need a cubic equation calculator, this works just fine: http://1728.org/cubic.htm