subtract 3xy+x2-2 from x^2+5xy+2
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Answer:
( 3xy + x² - 2 ) - ( x² + 5xy + 2 )
= 3xy - x² - 2 - x² - 5xy - 2
= 3xy - 5xy - x² - x² - 2 - 2
= -2xy - 2x² - 4