document.write( "Question 356096: Please help! I don't understand this problem at all.\r
\n" ); document.write( "\n" ); document.write( "Find the domain of the function f(x) = 3 + √(36-x^2 )/x^2- 9\r
\n" ); document.write( "\n" ); document.write( "Please show all work\r
\n" ); document.write( "\n" ); document.write( "Thank you!
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Algebra.Com's Answer #254183 by edjones(8007)\"\" \"About 
You can put this solution on YOUR website!
f(x) = (3 + sqrt(36-x^2 ))/(x^2- 9)
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\n" ); document.write( "The denominator cannot equal zero.
\n" ); document.write( "x^2-9=(x+3)(x-3)
\n" ); document.write( "(x+3)(x-3)=0
\n" ); document.write( "x=3, x=-3
\n" ); document.write( "So x cannot equal -3 or 3.
\n" ); document.write( "The domain of x is all real numbers except -3 and 3.
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