My Math Forum Confused with indices

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 January 19th, 2015, 09:07 AM #11 Math Team   Joined: Dec 2013 From: Colombia Posts: 7,671 Thanks: 2651 Math Focus: Mainly analysis and algebra On the left hand side 2 is the exponent of y and $y^2+3$ is the exponent of 3. On the right hand side $2y$ is the exponent of 9.
January 23rd, 2015, 12:15 PM   #12
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Quote:
 Originally Posted by MATHEMATICIAN $\displaystyle 3^{y^2+3}=9^{2y}$ can be written as 3^(y^2+3)=9^(2y) if only one constant or variable is used as exponent, brackets ( ) are not required. If more than one constant or variable is used as exponent we need brackets ( ) for clear understanding.
No way, This is where i was getting confused, because I did not for one minute realize, 3^(y^2+3)!!!! I've not seen multiple exponents like this for one number...

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