Mathematics
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OpenStudy (anonymous):
???
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OpenStudy (anonymous):
OpenStudy (anonymous):
pay no attention to the denominator
multiply out and combine like terms in the numerator
OpenStudy (anonymous):
\[3x\times 2x-(x^2+4)\times 3\]is what you need to work with
OpenStudy (anonymous):
let me know what you get, it should not be too bad to work out
OpenStudy (anonymous):
do i distribute the 3?
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OpenStudy (anonymous):
yes
OpenStudy (anonymous):
and don't forget that big fat minus sign in front
OpenStudy (anonymous):
6c-3x^2+12
OpenStudy (anonymous):
oh
OpenStudy (anonymous):
yeah you forgot it already
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OpenStudy (anonymous):
also i assume that mysterious \(6c\) was \(6x^2\)
OpenStudy (anonymous):
6x-3x^2-12
OpenStudy (anonymous):
careful
\[2x\times 3x=6x^2\] not \(6x\)
OpenStudy (anonymous):
3x^2-12
OpenStudy (anonymous):
that is the right one
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OpenStudy (anonymous):
you can factor out a 3 if you like, and write \(3(x^2-4)\) or even \(3(x+2)(x-2)\) but that is just showing off. i would leave it as \(3x^2-12\)
OpenStudy (anonymous):
factor?
OpenStudy (anonymous):
oh there you go haha
OpenStudy (anonymous):
oh it does say "factored form" doesn't it
OpenStudy (anonymous):
what about the bottom? can i factor that?
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OpenStudy (anonymous):
was it clear how to factor?
OpenStudy (anonymous):
it does say to factor
OpenStudy (anonymous):
no, the denominator is already in factored form
it is \((x^2+4)^2\)
OpenStudy (anonymous):
that means \((x^2+4)(x^2+4)\) so it is already factored. leave it alone
OpenStudy (anonymous):
alright so?
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OpenStudy (anonymous):
3(x+2)(x-2) for the top
OpenStudy (anonymous):
yes i got it right
OpenStudy (anonymous):
good
OpenStudy (anonymous):
can you help me out with another one?
OpenStudy (anonymous):
sure post in a new question and i will answer