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#1 2012-10-22 14:20:41
- skylor
- Guest
division
(9x^3 - 3x^2 + 13x - 5)/(3x - 1)
I came up with 3x^2 + -.66/3x-1 and was mark wrong.
#2 2012-10-22 14:28:33
- bobbym
- Administrator
Offline
Re: division
Hi;
-.66
Did you mean to have that period there?
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#5 2012-10-22 14:38:05
- bobbym
- Administrator
Offline
Re: division
Have you tried multiplying your answer by the divisor to check your work?
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#6 2012-10-22 14:44:55
- skylor
- Guest
Re: division
I think it was right but I wrote it wrong like 3x^2 + 0x - .66/3x-1 and he just marked it wrong because of that.
#7 2012-10-22 14:48:58
- bobbym
- Administrator
Offline
Re: division
Hi;
So you think the answer is:
I am afraid I would mark you wrong too.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#9 2012-10-22 23:42:24
- noelevans
- Full Member
Offline
Re: division
Hi!
You might write the remainder as -2/3. The quotient is 3x^2 + 13/3. 
Writing "pretty" math (two dimensional) is easier to read and grasp than LaTex (one dimensional).
LaTex is like painting on many strips of paper and then stacking them to see what picture they make.