What should be added to 2x^2 +y^2-xy to get 4x^2-3y^2
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What should be added to 2x^2 +y^2-xy to get 4x^2-3y^2
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Answer:
(4x^2-3y^2)-(2x^2+y^2-xy)
=4x^2-3y^2-2x^2-y^2+xy
=2x^2-4y^2+xy