+0  
 
+1
38
1
avatar+93 

Not sure how to do this one,do i convert them then divide then convert it back?

petri  Nov 6, 2018
 #1
avatar+91360 
+2

Remember that  a^m  x a ^n   =  a^(m + n)

 

So.....the numerator becomes

 

3^8  x 3^4   = 3^(8 +4)  =  3^12

 

And the denominator becomes

 

3^ 2  x 3^8  =  3^(2 + 8)  =  3^(10)

 

So  we have

 

3^12

_____        (1)

3^10

 

 

And

 

a^m

____    =     a^(m - n)

a^n

 

 

 

So (1)  evaluates to    3^(12- 10)   =  3^2  

 

 

 

cool cool cool

CPhill  Nov 6, 2018
edited by CPhill  Nov 6, 2018
edited by CPhill  Nov 6, 2018

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