x-2(x)+4/x^2 -4=x-2x+4/x^2 -4=-x-4+4/x^2
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Assuming you mean x squared plus 5x squared... the answer is 6x squared.
-x2+2x
if its x(squared) its 7x(cubed) if its 2xX its 14x(squared)
X2 (X squared)
[ x3 - 4x2 + 7x ] / (x) = x2 - 4x + 7