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OpenStudy (quickstudent):
How do I find the common denominator here?
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OpenStudy (quickstudent):
I am trying to simplify this expression: (325/x) - (325/x +15) I know that I have to multiply the denominator from the first fraction by something so that it will be the same as the denominator in the second fraction, but how do I do that?
OpenStudy (anonymous):
|dw:1425075738454:dw|
OpenStudy (anonymous):
do you get it?
OpenStudy (quickstudent):
But if I multiply x * x + 15, wouldn't that make x^2 + 15x?
OpenStudy (anonymous):
yes
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OpenStudy (anonymous):
multiply the numerators first and then subtract the two and tell me what you get
OpenStudy (quickstudent):
|dw:1425076261302:dw|
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