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OpenStudy (anonymous):
Please help I will fan and give medal:
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OpenStudy (anonymous):
Divide: \[\frac{ x^{2}+11x+30 }{ x^2{-25} } \div \frac{ x+6 }{ x-6 }\]
rishavraj (rishavraj):
\[x^2 + 11x + 30 = (x + 5)(x + 6)\]
\[x^2 - 25 = x^2 - 5^2 = (x + 5) (x - 5)\]
rishavraj (rishavraj):
so now it is
\[\frac{ (x + 5)(x + 6) }{ (x + 5)(x - 5) } \div \frac{ (x + 6) }{ (x - 6) }\]
OpenStudy (anonymous):
oh wow
OpenStudy (anonymous):
ok so now i cancel out and get \[\frac{ (x+6) }{ (x-5) }\div \frac{ (x+6) }{ (x-6) }\]
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OpenStudy (anonymous):
@rishavraj ^^^^
rishavraj (rishavraj):
yup.. u know
\[\frac{ a }{ b } \div \frac{ c }{ d } = \frac{ ad }{ bc } \]
OpenStudy (anonymous):
oh cross multiply
rishavraj (rishavraj):
hmmmmm
OpenStudy (anonymous):
so my final answer after canceling out would be: \[\frac{ (x-5) }{ (x-6) } ?\]
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rishavraj (rishavraj):
\[\frac{ (x - 6) }{ (x - 5) }\]
OpenStudy (anonymous):
how?
rishavraj (rishavraj):
\[\frac{ (x + 6) }{ (x - 5) } \div \frac{ (x + 6) }{ (x - 6) }\]
= \[\frac{ (x + 6)(x - 6) }{ (x - 5)(x + 6) }\]
OpenStudy (anonymous):
ok so my final answer would be (x-6)/(x-5) ?
OpenStudy (anonymous):
@rishavraj final answer: \[\frac{ (x-6) }{ (x-5) }\]
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rishavraj (rishavraj):
if u r supposed to simplify it then YES
OpenStudy (anonymous):
Thanks so much
rishavraj (rishavraj):
yw:PP
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