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Re: #32
Posted:
Jun 17, 2010 8:29 AM


Exactly, and as I stated I have different books that will give different answers, so even authors are not consistent. Kind of like interpreting the bible. LOL  msedfun@aol.com wrote: > > Once again  we are debating and debating  so how can we expect the students to know how to do it? > > Sharon > > > > > > > > > Original Message > From: Roberta Silver <rsilver@pob.k12.ny.us> > To: nyshsmath@mathforum.org; nyshsmath@mathforum.org > Sent: Thu, Jun 17, 2010 8:16 am > Subject: RE: #32 > > > The answer is 8. You take the principal square root of 4 and cube it. > > > > ________________________________ > > > > From: ownernyshsmath@mathforum.org on behalf of Linda Restive > > Sent: Wed 6/16/2010 4:46 PM > > To: nyshsmath@mathforum.org > > Subject: Re: #32 > > > > > > I mean 8 OR 8!! sorry. > > > >  Original Message  > > From: Linda Restive <mailto:precopio@nycap.rr.com> > > To: nyshsmath@mathforum.org > > Sent: Wednesday, June 16, 2010 4:41 PM > > Subject: Re: #32 > > > > Along the same lines, what is the VALUE OF 4 ^ (3/2)? I have a book > > that says 8 and 8.... but in another book they give the answer as only 8. It > > seems even the authors are confused. I tried googling it but I get conflicting > > answers. > > > >  Original Message  > > From: TKENYON@crcs.wnyric.org > > To: nyshsmath@mathforum.org > > Sent: Wednesday, June 16, 2010 3:45 PM > > Subject: re: #32 > > > > > > Which is why is should be absolute value of x, because while you assume > > the positive square root (principal root), you don't know that x is positive  > > it was never indicated that the domain was positive values of x. > > (I'm not sure if we're in agreement, or doing two different things.) > > > > > > > > when solving an equation x squared = 9, then yes the answer is + and > >  3, but when it is written as a square root, you assume the positive square > > root. > > > > > > > > ******************************************************************* * To > > unsubscribe from this mailing list, email the message * "unsubscribe nyshsmath" > > to majordomo@mathforum.org * * Read prior posts and download attachments from > > the web archives at * http://mathforum.org/kb/forum.jspa?forumIDg1 > > ******************************************************************* > > > > > > ________________________________ > > > > > > > > > > > > No virus found in this incoming message. > > Checked by AVG  www.avg.com > > Version: 8.5.437 / Virus Database: 271.1.1/2940  Release Date: 06/15/10 > > 18:35:00 > > > > > > > > ________________________________ > > > > > > > > > > > > No virus found in this incoming message. > > Checked by AVG  www.avg.com > > Version: 8.5.437 / Virus Database: 271.1.1/2940  Release Date: 06/15/10 > > 18:35:00 > > > > > > ******************************************************************* > > * To unsubscribe from this mailing list, email the message > > * "unsubscribe nyshsmath" to majordomo@mathforum.org > > * > > * Read prior posts and download attachments from the web archives at > > * http://mathforum.org/kb/forum.jspa?forumID=671 > > ******************************************************************* > > >
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