In factoring out the greatest common factor, we must first find the greatest common factor. So what we’re going to do is we’re going to write down each term of this expression. So we have 12x cubed; ...

To factor a trinomial in the form of ax squared plus bx plus c we are going to use the "ac" method. Notice that the “a” and the “c” are multiplied together and that's exactly what we are going to do.