document.write( "Question 764030: The function \r
\n" ); document.write( "\n" ); document.write( "f(x)=(x-1)/((x-4)sqrt(x+2)) \r
\n" ); document.write( "\n" ); document.write( "is negative for x in \r
\n" ); document.write( "\n" ); document.write( "a. (1,4)
\n" ); document.write( "b. (4, infinite)
\n" ); document.write( "c. (-infinite, 4)
\n" ); document.write( "d. (-infinite, 1)\r
\n" ); document.write( "\n" ); document.write( "Please tell me how to find the correct answer,
\n" ); document.write( "Thanks! \n" ); document.write( "
Algebra.Com's Answer #465156 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
The function
\n" ); document.write( "f(x)=(x-1)/((x-4)sqrt(x+2))
\n" ); document.write( "is negative for x in:
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\n" ); document.write( "make a chart:\r
\n" ); document.write( "\n" ); document.write( "...TP......(x-1).....(x-4)......(x+2......f(x).
\n" ); document.write( ".. -2.......-............-............0..........+
\n" ); document.write( "....1........0............-............+..........-
\n" ); document.write( "....3........+............-............+..........-
\n" ); document.write( ".. .4........+...........0............+..........+
\n" ); document.write( ". >5.......+...........+.............+.........+
\n" ); document.write( "f(x) is negative: [1,4)
\n" ); document.write( "Notes:
\n" ); document.write( "TP: test point
\n" ); document.write( "x≥-2 because of (x+2) radican\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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