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find range of (x+2)/x2-8x-4
Dear student,
Range of (x+2)/x2-8x-4 will be all real numbers except when the den is 0.
x2-8x-4 is to be factorised.
x1=8+4root5/2=4+2root5
x2=4-2root5
So the range will be all real numbers except when x takes these two values.
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