Subtract x2 - 2xy + 5y2 -4 from 4xy - 5x2 - y2 + 6.
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12
4xy-5x2-y2+6 - x2-2xy+5y2-4
4xy-2xy-5x2-x2-y2+5y2+6-4
2xy-6x2+4y2+2 = Solution ...
4xy-2xy-5x2-x2-y2+5y2+6-4
2xy-6x2+4y2+2 = Solution ...
Answered by
15
= 4xy-5x2-y2+6-(x2-2xy+5y2-4)
= 4xy-5x2-y2+6-x2+2xy-5y2+4
= 4xy+2xy-5x2-x2-y2-5y2+6+4
= 6xy-6x2-6y2+10
= 4xy-5x2-y2+6-x2+2xy-5y2+4
= 4xy+2xy-5x2-x2-y2-5y2+6+4
= 6xy-6x2-6y2+10
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