Mathematics
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OpenStudy (testing123guest):
@welshfella @texaschic101 plz help
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OpenStudy (testing123guest):
OpenStudy (anonymous):
Have you learnt the laws of exponents?
OpenStudy (testing123guest):
a little but i am very bad at it
OpenStudy (anonymous):
When dividing you subtract exponents
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OpenStudy (anonymous):
\[\frac{ a ^{n} }{ a^{m} }=a ^{n-m}\]
OpenStudy (testing123guest):
ya but i dont under stand how to do it when it is n a fraction form
OpenStudy (anonymous):
use my equation that i just wrote
OpenStudy (anonymous):
what is a in your example? Its the base number. I.e a
OpenStudy (anonymous):
n=7 m=3
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OpenStudy (testing123guest):
s do i add 7 and 3
OpenStudy (testing123guest):
*so
OpenStudy (anonymous):
\[\frac{ a ^{n} }{ a^{m} }=a ^{n-m}\]
OpenStudy (anonymous):
what are we doing to the exponents on the RHS of the equation?
OpenStudy (texaschic101):
just plug your numbers into the formula
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OpenStudy (testing123guest):
i am not sure
OpenStudy (texaschic101):
you are subtracting
OpenStudy (testing123guest):
7-3 so 4
OpenStudy (testing123guest):
a
OpenStudy (texaschic101):
yes...a^4
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OpenStudy (testing123guest):
now can u check this one \[3^{2} * 3^{5} * 3^{-3}\] is it 81
and what is a,b,c,d
OpenStudy (testing123guest):
is it b
OpenStudy (texaschic101):
when you are multiplying exponents with the same base, you add the exponents
OpenStudy (texaschic101):
so add the exponents.......2 + 5 + (-3)
OpenStudy (texaschic101):
yes...your correct...it is b
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OpenStudy (testing123guest):
one more plz