what must be added to -7xy + 3y2 - 13x2y2 to get -x2y2 +5y2-3xy
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Answer:
-10xy +8y2-14x2y2
Step-by-step explanation:
-7xy-3xy +3y2+5y2-13x2y2-x2y2
-10xy +8y2 -14x2y2
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