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Mathematics 10 Online
OpenStudy (testing123guest):

@welshfella @texaschic101 plz help

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

OpenStudy (anonymous):

http://www.rapidtables.com/math/number/exponent.htm

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

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

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

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

OpenStudy (testing123guest):

one more plz

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