1. 8a^2 + 6ab + 12ab + ab^2 =
8a^2 + 18ab + ab^2

2. 7m^2 + 8mn + 14mn + 16n^2 =
7m^2 + 22mn + 16n^2

3. 5h^2 + 15hx - 2hx - 6x^2 =
5h^2 + 13hx - 6x^2

4. 18k^2 + 12ky - 3ky - 2y^2 =
18y^2 + 9ky - 2y^2

5. 16s^3 - 4s^3t^2 - 4st + t^3 =
can't simplify because they don't have the same bases(?)

6. x^2 + 3x + xy + 3y =
same as #5

7. ax - 26 - ay + 2cy =
same as above

8. 2am - 2an + 2bm - 3bn =
same as above

9. xy - 4y - 2x + 8 =
same as above

10. ax + 4x - ay - 4y =
same as above

WOW. UHM OKAY. YOU SHOULDN'T BELIEVE THIS 100%.
I only believe it like 50%. XD I feel so ashamed because I just finished learning this stuff and I already kinda forgot. :\ But for the ones that can't be simplified anymore:

It's because they don't have the same bases.

Example:
ax + 4x - ay - 4y

One base is "ax". Another one is "x". The third one is "ay". And the last one is "y". >.<

I THINK THIS IS RIGHT. OMG. Sorry if it's wrong. >.<

omg i hated algebra and now i'm in algebra 2 :(
I forgot all that stuff

ewww factoring... srry i at factoring good luck :D

I always fall asleep in math. Sorry.

ohmygod ohmygod ohmyGOD i forgot all of this ohmygod i JUST took these rules i swear by my life ohmygod i completely forgot them.
meh, the effect of summer

Still need help, dear? Cause trust me when I say this, when it comes to algebra, I'm a master at it.

4. (6k-y)(3k+2y)

3. (h+3x)(5h-2x)

OMG I DID THOSE SO MUCH IN SIXTH GRADE THAT I HATE THEM RIGHT NOW LOL

I think my eyes got blind for a while *_*
I never pay attention during Math class ~ So, meh ~ :/
Sorry !

ahww i want to help
i miss algebra otl what
but i'm busy so yeah...

Do you still need help?
I love algebra :P

you could always go on: wolframalpha.com
:D

do you still need help? :P

what method are u using? wait.....what grade are this? O.O
nosebleed~!xD