what must be subtracted from 2x² - xy - 5y² to make it -5x² - 3xy - 2y²
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Answer:7x^2+2xy-3y^2
Step-by-step explanation:
a-b=c
a-c=b
2x² - xy - 5y²-(-5x² - 3xy - 2y²)=7x^2+2xy-3y^2
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