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April 21, 2014

April 21, 2014

Posted by **math** on Tuesday, January 11, 2011 at 8:20am.

- algebra -
**drwls**, Tuesday, January 11, 2011 at 8:42amIs 2x, or 2x+1 the exponent, or is the first term 81^2 * x? You need to use parentheses to show which it is.

If you mean 81^(2x+1) = 3^4 = 81, then

2x +1 = 1, which means x = 0

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