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OpenStudy (anonymous):
Please help me multiply this rational expression
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OpenStudy (anonymous):
jimthompson5910 (jim_thompson5910):
what do you get when you factor s^2 - 81 ?
OpenStudy (anonymous):
(s-9)(s+9)?
jimthompson5910 (jim_thompson5910):
yes
jimthompson5910 (jim_thompson5910):
so a "s+9" up top cancels with a "s+9" in the bottom
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jimthompson5910 (jim_thompson5910):
what else cancels?
jimthompson5910 (jim_thompson5910):
|dw:1414552213581:dw|
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