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1. Should be 8a15 but I think that is just a typo because the * and 8 are on the same key of the keyboard.
2-4 look ok to me.
5. What you have looks ok to me; however, can't these two terms be multiplied to give 200x8y9 ?

Yeah sorry about #1 that's what I had...lol
FOr number 5 I wasn't sure if I was supposed to multiply them or just leave them like that...Thanks for the help...lol
DO you think you can help me with the FOIL Problems...I don't get those at all!!

I don't know what I'm supposed to do. Are you supposed to simply multiply the two together? By the way, is FOIL an acronymn. If not it shows just how behind the times I am.

Well FOIL is a method but it's difficult to explain in words so if you go to google you can see...PLease i need help...:)thanks anyways...

OK. I read about it and I know how to do it. I just never heard it called that before.

Oh ok lol so can you help me then?

PLease CHeck my work...
1.(2a^5)^3=*a^15
2.(-3xy^3)^4=81x^4y^12
3.(5a^3b^4)^2=25a^6b^8
4.(-mn^8)^3=-m^3n^24
5.(-2x^2y)^3*(5xy^3)^2=-8x^6y^3 * 25x^2y^6

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