document.write( "Question 211168: What is the domain of (x-5)/(x^2+5x+6) \n" ); document.write( "
Algebra.Com's Answer #159517 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
Domain specifies the values of 'x' can take.
\n" ); document.write( "In this case, you just want to make sure the denominator does NOT equal zero.
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\n" ); document.write( "0 = (x^2+5x+6)
\n" ); document.write( "0 = (x+2)(x+3)
\n" ); document.write( "x = {-2,-3}
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\n" ); document.write( "Therefore, the domain is
\n" ); document.write( "all real numbers except -2 and -3.
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\n" ); document.write( "Or, you can write as:
\n" ); document.write( "(-oo, -3) U (-2, -3) U (-3, +oo)
\n" ); document.write( "where oo is the infinity symbol
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