View Full Version : need someone to check my math problem


Brandi
02-02-2006, 09:53 PM
This is only a homework problem which counts as a few measly points of extra credit at the end of the course if we turn it in (and it doesn't really matter if it's necessarily right or wrong, he just wants to see us working it out). I just want to see if the answer I came up with is right. Our book only answers odd numbers and this one is even so I have no way to check it.

Anyone who is good with polynomials can help :) I have no idea if or how to enter in exponents so I'm just going to use the ^ then the number after it is the exponent. So, for 6 cubed, I will put 6^3 and for say 9 to the 8th power I will write 9^8 or v to the sixth power I'll put v^6
I hope that doesn't confuse anyone.


(tu^2v-4t^2u^2v+9t^3uv+3tv)+(3t^2u^2+2tv-t^3)-(4t^2u^2v+3tv+2tu^2v)-(6t^3uv+2tv)


My answer is
-8t^2u^2v+3t^3uv+3t^2u^2-tu^2v-3tv-3t

but I honestly don't think that's right. Ugh. I just got done doing 100 problems like this and looking at the letters and numbers are frying my brain :sick

Mao
02-02-2006, 10:01 PM
jeez, all those ^s are making my eyes go funny!

Rach
02-02-2006, 10:01 PM
Man, I wish I could help you...

Brandi
02-02-2006, 10:02 PM
I know! I am sorry. There is no way to write exponents on a regular keyboard though is there? Not with ALT or anything? I wish I could.

April
02-02-2006, 10:03 PM
give me a minute

Brandi
02-02-2006, 10:07 PM
hubby checked and said the -3tv is wrong b/c they cancel each other out. My addition was wrong, I think.

Thank you for helping April :D

April
02-02-2006, 10:11 PM
I got something different


-8t^2u^2v+3t^3uv+3t^2u^2-tu^2v-t^3

I'll try again

Edited because I typed the last one wrong, but I got the same answer both times

Brandi
02-02-2006, 10:15 PM
these little damn ^^^ things make it hard huh? :lmao I wish there was a way to write exponents. grrr.

Thank you for helping though :P

April
02-02-2006, 10:20 PM
I edited my answer if you already looked at it :D

April
02-02-2006, 10:20 PM
yes those ^^^^^ take forever to write :hehe

*~*Cori*~*
02-02-2006, 10:46 PM
OH SWEET JESUS :shock
I have never seen crap like that... I really do think the school system in this side of FL needs to be looked at... Screw math I would never pass that :tears
GOOD LUCK BRANDI! :)

matty
02-03-2006, 12:48 AM
My husband got the same answer April got. I wasn't brave enough to try myself. :)

galxy8
02-03-2006, 05:38 AM
I got the same answer as April, but it's been so long since I've done this . . . but I swear you can simplify it more by bringing down the exponents. (Can't remember at the top of my head all the rules on how to do it, though.)

KevzQueen
02-04-2006, 11:55 AM
wow that looks crazy! I have a hard enough time with subtraction:lmao