document.write( "Question 612420: Find all numbers in which the rational expression is not defined for;
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Algebra.Com's Answer #385451 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi, 
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document.write( "Find all numbers in which the rational expression is not defined for;
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document.write( "\"%282x-7%29%2F%28x%5E2%2B5x-4%29\"
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document.write( "the rational expression is not defined when Denominator = 0
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document.write( "x^2+5x-4 = 0
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document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
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document.write( "\"x+=+%28-5+%2B-+sqrt%28+41%29%29%2F%282%29+\"   ||Not defined for these x-values \n" );
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