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प्रश्न
Add : x3 − x2y + 5xy2 + y3, - x3 − 9xy2 + y3, 3x2y + 9xy2
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उत्तर
x3 − x2y + 5xy2 + y3
−x3 − 9xy2 + y3
+ 3x2y + 9xy2
2x2y + 5xy2 + 2y3
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