document.write( "Question 468613: My problem is: Find the domain. f(x) = x³ - 2 I have no clue as to how to solve this with exponents. Can you help me? thanks. \n" ); document.write( "
Algebra.Com's Answer #321540 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "f(x) = x³ - 2\r\n" );
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document.write( "This calls for cubing and subtacting.\r\n" );
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document.write( "All valuex of x can be cubed and then have 2 subtracted \r\n" );
document.write( "from the result.  So the domain is \"all real numbers\" or\r\n" );
document.write( "ℛ or (-∞,∞)\r\n" );
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document.write( "Only division and even roots can keep the domain of a rational\r\n" );
document.write( "functions from including all real numbers.  The only basic\r\n" );
document.write( "operations that cannot be done in real number mathematics is \r\n" );
document.write( "\"division by zero\" and \"taking an even root of a negative \r\n" );
document.write( "number\". \r\n" );
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document.write( "Edwin
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