(i) 3x2 - 4xy + 2y2, 6x2 + 5xy – 4y2, –x2 - 6xy + 102
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6-4y+4y,12+5xy-8y,-2x-6xy+102
6,12+5xy-8y,-6xy+102
120,-1xy,-8y i think this answer is right maybe
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