You can put this solution on YOUR website! Factor completely: First look for a factor that is common to each term. It looks like -3t is a common factor so factor this out. Now see if the factor inside the parentheses is factorable.
Assume the factors will be:
Can you find a & b such that:
a*b = 2 and a + b = -1
The factors of 2 are:
(1)(2) or
(-1)(-2)
Neither of these pairs will add up to -1.
So I would conclude that you cannot factor the expression any further than: