if x = 4, x-2 = 2
if x = 3, x-2 = 1
if x = 2, x-2 = 0
if x = 1, x-2 = -1
if x = 0, x-2 = -2
if x = -1, x-2 = -3
so + or - depending on if x greater than or less than 2
If x is a nonzero real number,is x-2 always positive,always negative,or positive or negative depending on whether x is possible or negative explain
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