1)4x^2-12x+9+12x-2x^2=2x^2+9
2)2y-4+y^2-2y-2y^2+2=-y^2-2
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1)4x^2-12x+9+12x-2x^2=2x^2+9
2)2y-4+y^2-2y-2y^2+2=-y^2-2