I've mentioned in previous questions that I have a hard time with simplifying algebraic equations.
For this equation, I assumed we would first put the equation into easier to read form:
$(k+1)(k+1)(k+1)$
Then apply FOIL to the first two:
EDIT: $(k^2+2k+1)(k+1)$
Although this is where I'm stuck. Any help is appreciated.
With all your help my answer is:
$k^3+3k^2+3k+1$
Thanks.