WHAT IS:-
-4x² + 3xy – 5y²
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Answer:
Step-by-step explanation:
P = 2 x² + 3 x² y + 3 x y - 5 y²
Q = -5 x² - 4 x² y + 2 x y + 3 y²
======================= add P +Q
-3 x² - x² y + 5 x y - 2 y²
========================
Compare P+Q with R . So P+Q = R or P+Q - R = 0
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