Question 687037: how can I factor by grouping this problem.
3a3+2a2+6a+4=
Answer by josh_jordan(263)   (Show Source):
You can put this solution on YOUR website! To factor by grouping, you want to find similar terms. With  , the easiest way to group is by looking at the numbers in front of the variables and seeing if any of the numbers are factors of each other. 3 and 6 are factors of 6, and 2 and 4 are factors of 4. So, let's try grouping 3a^3 and 6a together, and 2a^2 and 4 together:
In the first set of parenthesis, we can factor out 3a:
In the second set of parenthesis, we can factor out a 2:
Putting these both together, results in:
As you can see, there are two sets of 
We can group these together, and then, in another set of parenthesis, group the remaining terms together:
 , which is our final answer
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