no, t(t+1)(t-1)=0
now solve.
Is this how you solve t^3 - t = 0?
t(t^2-1)=0
t(t-1)(t-1)=0
t=0 or t=1
{0,1}
4 answers
so t=0 or t=-1 or t=1, and the solution set is {0,-1,1}?
yes.
thanks