anonymous 5 years ago can someone help me with my math homework?

1. mathteacher1729

2. anonymous

aman=am+n thats the first problem...... the m and ns go on top

3. mathteacher1729

Oh, to type that you must use this notation: \ [ x^2 \ ] gives \[ x^2 \]

4. mathteacher1729

Or click the "equation" button on the left of the text input field, and type your equation. :)

5. anonymous

thats complicated

6. anonymous

when i see math i get lost.... is there any other way you could help me?

7. mathteacher1729

Ok, I think you were trying to type this: \[a^ma^n=a^{m+n} \] if so, this is the "exponent addition law".

8. anonymous

yes that is exactly what i was trying to type

9. anonymous

10. mathteacher1729

There isn't any "answer", really. It's stating a rule. :) a = "the base" m, n = "the exponents" The rule says that if you (LEFT SIDE) multiply two numbers together, if the bases are the same, you (RIGHT SIDE) add the exponents and keep the base the same.

11. anonymous

ok im lost... how would you do it though?

12. mathteacher1729

So they might ask you something like: \[ 4^74^{12}=??\] and you would say ... \[4^74^{12}=4^{7+12} =4^19\] Which, by the way. Is A HUGE NUMBER. :-p

13. mathteacher1729

ARGH, my error! \[4^74^{12}=4^{7+12}=4^{19}\] Four to the nineteenth power. = HUGE.

14. anonymous

im confused.... is there any way you could teach it step by step?

15. anonymous

where do you get numbers if there is only letters??

16. mathteacher1729

I just made up the "bases" and the "exponents" then followd the followed the rules. It sounds like you need a quick refresher on exponents. Have you heard of Khanacademy?

17. anonymous

no i havent.... i have a math class tonight but i never understand it

18. mathteacher1729

Ah, ok. I would recommend starting by going to http://www.mathtv.com and then clicking Algebra ==> Exponents ==> Definitions and Properties Watch the first two videos. That guys is a GENIUS who explains things VERY WELL. :)

19. anonymous

ok thank you... ill try to see if i finally get it

20. mathteacher1729

Yeah, that guy is the best. I think you may find his vids helpful. Khanacademy is another free video service, but he's not as organized as Mathtv. :) Best of luck to you!

21. anonymous

thanks