exam Maths Puzzle Numerical Ability

I am not sure how to answer this homework problem. It is an online math class, I am not sure of its origins.
-2x+4>12

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Is it true that when constructing the median of a triangle, it is possible that the median may lie exterior to the triangle? For all r not equal to + or - 2, r^2-5r+6/r^2-4