document.write( "Question 369701: Solve the equation, show work,and give exact answers\r
\n" ); document.write( "\n" ); document.write( "10. [(e^x)-(e^-x)]/(2)= (-2) \n" ); document.write( "

Algebra.Com's Answer #263462 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"e%5Ex-e%5E%28-x%29=-4\"$
\n" ); document.write( " $\"e%5E%282x%29-1=-4e%5Ex\"$
\n" ); document.write( " $\"e%5E%282x%29%2B4e%5Ex-1=0\"$
\n" ); document.write( " $\"u%5E2%2B4u-1=0\"$ where $\"u=e%5Ex\"$
\n" ); document.write( " $\"u%5E2%2B4u%2B4-1-4=0\"$
\n" ); document.write( " $\"%28u%2B2%29%5E2=5\"$
\n" ); document.write( " $\"u%2B2=0+%2B-+sqrt%285%29\"$
\n" ); document.write( " $\"u=-2+%2B-+sqrt%285%29\"$
\n" ); document.write( " $\"e%5Ex=-2+%2B-+sqrt%285%29\"$
\n" ); document.write( " $\"highlight%28x=ln%28-2%2Bsqrt%285%29%29%29\"$
\n" ); document.write( "The negative solution was removed since the natural log function requires a positive argument.
\n" ); document.write( " \n" ); document.write( "

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