Mathematics
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OpenStudy (anonymous):
new to this site, i need help with factoring complex trinomials
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OpenStudy (anonymous):
Any example problems?
OpenStudy (anonymous):
sure, i'll put" for squared, okay? 27a"b"'+9a"b" - 18a"'b"
OpenStudy (anonymous):
okay, one moment
OpenStudy (anonymous):
"' is cubed
OpenStudy (anonymous):
sorry for the wait.... just hold on a couple more minutes please
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OpenStudy (anonymous):
?
OpenStudy (anonymous):
still working on it... algebra was so long ago... sorry for the wait again
OpenStudy (anonymous):
Ok here it goes:
OpenStudy (anonymous):
So first you need to look for a common factor in the numbers.
OpenStudy (anonymous):
So in this case the factor is 9.
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OpenStudy (anonymous):
Then you look at the variables, look for the a, the lowest form of a is a'', so you can use this
OpenStudy (anonymous):
Now look at the b, the lowest form is b''
OpenStudy (anonymous):
Now put that together 9a''b''
OpenStudy (anonymous):
now how many times does 9a''b'' fit in 27a''b'''?
OpenStudy (anonymous):
3b
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OpenStudy (anonymous):
moving on.... how many times does 9a''b'' fit into 9a''b''? Once of course
OpenStudy (anonymous):
Now same thing but how many times does it fit into -18a'''b''?
OpenStudy (anonymous):
-2a
OpenStudy (anonymous):
Now put it together...
OpenStudy (anonymous):
you get: 9a''b''(3b+1-2a)
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OpenStudy (anonymous):
Ta da! all factored!
OpenStudy (anonymous):
Do you understand what i'm trying to explain?
OpenStudy (anonymous):
i know how to get that far, but we need to go further
OpenStudy (anonymous):
How so?
OpenStudy (anonymous):
do you have the answer to a sample problem so I know what you mean?
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OpenStudy (anonymous):
?
OpenStudy (anonymous):
sorry, slow comp.. i need to find sum and product..
OpenStudy (anonymous):
Ok
OpenStudy (anonymous):
wait.. i just checked in the book and thats the answer, can you help me with another example?
OpenStudy (anonymous):
thank you, i think it helped me, i have to go now, bye
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OpenStudy (anonymous):
ok good luck! sorry if i didn't get what you needed