## MiaKitty 3 years ago [8.02] Determine whether the following polynomials can be factored by grouping. If so, factor the polynomials showing all work. If not, explain why this method will not work. a.4x2 + 12xy + 2x + 2y b.3m2 + 6mn + 7m + 14n

1. MiaKitty

The first one is factored by grouping, I am confused on the 2nd. :D

2. MiaKitty

I think...HELP!!!

3. dpgreen

yes it can take out the 3m from the first part and 7 from the second

4. MiaKitty

Ok, thx. :)

5. dpgreen

you get 3m(m+2n)+7(m+2n)

6. dpgreen

then you can simplify it as (3m+7)(m+2n)

7. dpgreen

good enough?

8. MiaKitty

Hmm...yes, can you show me the first one to make sure?

9. MiaKitty

a.4x2 + 12xy + 2x + 2y

10. dpgreen

yeah....im not so sure about the first one...i dont think you can do it by group factoring because it can't be factored unless done by completing the square or using the quadratic formula

11. dpgreen

wait...you did learn about breaking it up into 3 and 1 or 2 and 2 right?

12. MiaKitty

Yes, I really don't understand this!!! I hate math and science. :(

13. dpgreen

lol, I'm not a big fan either, but im pretty sure you cant do the first one, let me look it up

14. dpgreen

yeah..you can't

15. MiaKitty

Oh, wow, lol! Then what do I say?

16. dpgreen

they will all have to become a diff of squares to be solvable for the first one

17. dpgreen

A. cannot be factored by grouping B. can

18. MiaKitty

Oh, lol! Thx!! :D totally think this stuff is hard!!

19. MiaKitty

Now I need the other one aboutr Jose. :)