Question 253943
it says for all r, then has an = sign with a line thru it, +_ 2. so not equall to and plus or minus to 2? 
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For all r not equal to +/-2
(r^2-5r+6)/(r^2-4) 
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= [(r-3)(r-2)]/[(r-2)(r+2)]
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= (r-3)/(r+2)
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Cheers,
Stan H.