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Mathematics 82 Online
OpenStudy (anonymous):

@Yuki (or whoever gets to it first) so would you use the same techniques you were showing me for this one? it is in an attachment >.< sowee im confused... :P

OpenStudy (anonymous):

OpenStudy (anonymous):

the first one is the equation your simplifying the next 3 are the options :)

OpenStudy (anonymous):

Eh, I would just factorise the first term, then multiply by the inverse of \[n+4 / n-3\]

OpenStudy (anonymous):

So the first term reduces to (n+4)^2/(n-3)^2 after factorising then you just multiply that by (n-3)/(n+4) which cancels the first to (n+4)/(n-3)

OpenStudy (anonymous):

Ahhh i see i would have gone with C i wish there were a quicker easier way to find the answers to these things that werent so dang complicated!! :P lol but thanks a bunch just helped me slot!! :D

OpenStudy (anonymous):

your welcome :D

OpenStudy (anonymous):

so then the answer to this one would be : wait here i will attach them can u do the last two with me? pls? :)

OpenStudy (anonymous):

OK

OpenStudy (anonymous):

option C = 1

OpenStudy (anonymous):

OK so factorise (n^2 + 3n + 2) to (n+2)(n+1), so it becomes \[((n+2)(n+1))\div2\] then multiply that by the reciprocal of (n+1)/(2(n+2)) which is 2(n+2) / (n+1) , both the 2s cancel and the (n+1)s cancel so its just (n+2)^2

OpenStudy (anonymous):

Ahhhh alright i see the "pattern" or whatever lol okie dokie last one and its on long division UGH :P i stil cant get the hang of it :P

OpenStudy (anonymous):

Option A = x + 5 Option D = x - 7

OpenStudy (anonymous):

OK well can you do long division? Kinda hard to show it on here but I can try

OpenStudy (anonymous):

:P i hate long division URGHHHH

OpenStudy (anonymous):

ok so do you think you could attach the steps?

OpenStudy (anonymous):

Lol x - 9 ______________ x+7/x^2 - 2x - 30 x^2 + 7x -------- -9x - 30 -9x - 63 ---------- 33 <- remainder so it's x - 9 + 33/(x+7)

OpenStudy (anonymous):

Ok im pretty sure i get it now, well more than i got it before :) lol thanks :)

OpenStudy (anonymous):

i always get so wrapped up in the solving underneath the division thing i forget about above it ^^

OpenStudy (anonymous):

haha!! thx!! :)

OpenStudy (anonymous):

Yeah.. I remember doing long division of polynomials last term, it's annoying cause I never used to use long division in lower school I just did the divisions in my head so I had no idea how to do long division. Good luck and you're welcome..

OpenStudy (anonymous):

yea ikr lol thx :)

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