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View Full Version : Simplify (5*6^x)+(6*6^(x+1)) ?


Zarrin
Apr 16, 2007, 08:22 PM
Simplifying (5*6^x)+(6*6^(x+1)) = 6*6^(x+1) but I don't know why?

It could also = 6*6^(x+2) , I don't know which one is right because 2 different places are giving me 2 different answers.

thanks!

galactus
Apr 17, 2007, 09:48 AM
Hello Zarrin:

The reason you're having trouble is because that statement is not true.

The left side reduces to 41\cdot{6^{x}} and the right side to

36\cdot{6^{x}}

Look at your equation. How could it be true, unless 5\cdot{6^{x}}=0?

But that is not true for any x. Therefore, the statement is false.