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January 19th, 2015, 10:07 AM   #11
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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.
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January 23rd, 2015, 01:15 PM   #12
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Originally Posted by MATHEMATICIAN View Post
$\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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