document.write( "Question 956941: Find all the numbers not in the domain of the function
\n" ); document.write( "F(x)=(x^2-25)/(x^2-6x-27) \n" ); document.write( "

Algebra.Com's Answer #584722 by MathLover1(20850) $\"\"$ $\"About$

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$\"F%28x%29=%28x%5E2-25%29%2F%28x%5E2-6x-27%29\"$ the domain will be all real numbers excluding those which make denominator $\"%28x%5E2-6x-27%29\"$ equal to zero and they are:\r
\n" ); document.write( "\n" ); document.write( " $\"x%5E2-6x-27=0\"$
\n" ); document.write( " $\"x%5E2-9x%2B3x-27=0\"$
\n" ); document.write( " $\"%28x%5E2-9x%29%2B%283x-27%29=0\"$
\n" ); document.write( " $\"x%28x-9%29%2B3%28x-9%29=0\"$
\n" ); document.write( " $\"%28x%2B3%29%28x-9%29=0\"$ \r
\n" ); document.write( "\n" ); document.write( "so, $\"%28x%2B3%29=0\"$ => if $\"x=-3\"$ and $\"%28x-9%29=0\"$ => if $\"x=9\"$ \r
\n" ); document.write( "\n" ); document.write( "then, domain is:
\n" ); document.write( "{ $\"x\"$ element $\"R\"$ : $\"x%3C%3E-3\"$ and $\"x%3C%3E9\"$ }\r
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