document.write( "Question 916457: Find the domain of the function. (Enter your answer using interval notation.)
\n" ); document.write( "f(x) = 9x2 + 7x − 1
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Algebra.Com's Answer #556062 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "domain:\r
\n" ); document.write( "\n" ); document.write( "\"R+\" (all real numbers)\r
\n" ); document.write( "\n" ); document.write( "in interval notation:\r
\n" ); document.write( "\n" ); document.write( "(\"-infinity\", \"infinity\")
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