Find the sum of 4x2 - 5xy + 3y2 ,-6x2 - 4xy + 2y2
and -4y2
-3x2
.
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Step-by-step explanation:
4x² - 5xy + 3y² ,-6x² - 4xy + 2y² + -4y² +-3x²
=4x² -6x²+-3x²+3y² + 2y² -4y²-4xy-5xy
= -5x²+1y²-9xy
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