document.write( "Question 156196: find domain and range for y= x^2+3 \n" ); document.write( "
Algebra.Com's Answer #115064 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
find domain and range for \"y=+x%5E2%2B3\"
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document.write( "The domain for every polynomial is (\"-infinity\",\"infinity\")\r\n" );
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document.write( "To find the range, solve for x:\r\n" );
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document.write( "\"y=+x%5E2%2B3\"\r\n" );
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document.write( "\"y-3=x%5E2\"\r\n" );
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document.write( "\"x%5E2=y-3\"\r\n" );
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document.write( "\"sqrt%28x%5E2%29\"= ±\"sqrt%28y-3%29\"\r\n" );
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document.write( "\"x\"= ±\"sqrt%28y-3%29\"\r\n" );
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document.write( "What is under a square root must be greater than\r\n" );
document.write( "or equal to 0, so\r\n" );
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document.write( "\"y-3%3E=0\"\r\n" );
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document.write( "\"y%3E=3\"\r\n" );
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document.write( "In interval notation that is \r\n" );
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document.write( "[3,\"infinity\").\r\n" );
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document.write( "Edwin
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