SOLUTION: factor 3x^4 y^2

SOLUTION: factor 3x^4 y^2 - 3x^2y^2

Question 261683: factor
3x^4 y^2 - 3x^2y^2
Found 2 solutions by checkley77, PRMath:
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
3x^4 y^2 - 3x^2 y^2
3X^2Y^2(X^2-1)
3X^2Y^2(X-1)(X+1) ANS.
Answer by PRMath(133) (Show Source): You can put this solution on YOUR website!
Your problem is:
- What is common to both? Well, a 3 is common and there are x and y variables. You can "pull out" those numbers and variables and when we "pull" them out, it means we are DIVIDING. Try this:

Let's pull out a 3, as well as an and a , k?

<---To get this, we divided / to get and we divided / to get .
We still are not done factoring because is the difference of squares, so nowwww we have to factor that like this:

Now it's all factored. :-)
I hope this helps. I have some factoring tutorials on youtube. If you search for PRMathChicago on youtube, you'll find the videos.
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