document.write( "Question 342649: find the domain of the function f(x) = 5x to the second power +2x-1... and please explain who you figure this out.. \n" ); document.write( "
Algebra.Com's Answer #245254 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
The domain is the x values for which f(x) makes sense or is defined.
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\n" ); document.write( "(\"-infinity\",\"infinity\")
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