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Old 05-22-2015   #3
Dragonballful23

 
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Join Date: Dec 2011
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Quote:
Originally Posted by eliseo View Post
It's infinity
Here is how you solve. since 9^(x+2)=3^x, you can say 3^(2x+4)=3^x

Now, just like when you factor quadratic equations, take out the 3.
3x+4=x
2x=-4
x=-2!
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