document.write( "Question 443270: Given f(x)= 3 over x(squared)-4 and g(x)= 5 over x\r
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Algebra.Com's Answer #305778 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!
Given \r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29=+3+%2F%28x%5E2-4+%29+and%0D%0A%7B%7B%7Bg%28x%29=+5%2F+x\"\r
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\n" ); document.write( "\n" ); document.write( "Find the following
\n" ); document.write( "1. f o g\r
\n" ); document.write( "\n" ); document.write( "\"f+o+g%28x%29=f%28g%28x%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f+o+g%28x%29=f%283%2F%285%2F+x%29%5E2-4%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f+o+g%28x%29=f%283%2F%2825%2Fx%5E2-4%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f+o+g%28x%29=f%283%2F%28%2825-4x%5E2%29%2Fx%5E2%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f+o+g%28x%29=f%283x%5E2%2F%2825-4x%5E2%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "2. domain of f o g\r
\n" ); document.write( "\n" ); document.write( "restrictions:\r
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\n" ); document.write( "\n" ); document.write( "\"25-4x%5E2\"could not be equal to \"0\"\r
\n" ); document.write( "\n" ); document.write( "so, it will be \"25-4x%5E2=0\" for:\r
\n" ); document.write( "\n" ); document.write( "\"25-4x%5E2=0\"\r
\n" ); document.write( "\n" ); document.write( "\"25=4x%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"25%2F4=x%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"x=5%2F2\"...or...\"x=-5%2F2\"\r
\n" ); document.write( "\n" ); document.write( "so domain is (\"-infinity\",\"-5%2F2\") U (\"5%2F2\", \"infinity\")\r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+500%2C+500%2C+-5%2C+10%2C+-5%2C+5%2C+3x%5E2%2F%2825-4x%5E2%29%29+\"\r
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