NeedsGoodAnswer
Simplify 3^9 / 3^12



This Question is Closed

NeedsGoodAnswer
Best Response
You've already chosen the best response.
0
answers: 3^3
3^21
1/3^21
1/3^3

asnaseer
Best Response
You've already chosen the best response.
1
do you know the rule:\[x^a/x^b=x^{ab}\]

NeedsGoodAnswer
Best Response
You've already chosen the best response.
0
nope sure dont

asnaseer
Best Response
You've already chosen the best response.
1
what have you been taught about indexes?

NeedsGoodAnswer
Best Response
You've already chosen the best response.
0
nothing at all that i can recall

NeedsGoodAnswer
Best Response
You've already chosen the best response.
0
no pun intended

asnaseer
Best Response
You've already chosen the best response.
1
so how do they expect you to solve this?
have you been told to use any specific method?

NeedsGoodAnswer
Best Response
You've already chosen the best response.
0
i think we have i just dont remember

asnaseer
Best Response
You've already chosen the best response.
1
well at the very least you need to know the rules of index multiplication and division.

NeedsGoodAnswer
Best Response
You've already chosen the best response.
0
prolly do just dont remember what they are

asnaseer
Best Response
You've already chosen the best response.
1
e.g. the rule I just showed you can be proved with following example:\[\frac{x^5}{x^3}=\frac{x*x*x*x*x}{x*x*x}=x*x=x^2\]

NeedsGoodAnswer
Best Response
You've already chosen the best response.
0
oooo thtz right i remember now thx

asnaseer
Best Response
You've already chosen the best response.
1
so in your case,\[3^{9}/3^{12}=3^{9(12)}=3^{9+12}=3^3\]

NeedsGoodAnswer
Best Response
You've already chosen the best response.
0
yup i got it thanks alot

asnaseer
Best Response
You've already chosen the best response.
1
yw