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प्रश्न
Add: 4x2y, - 3xy2, - 5xy2, 5x2y
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उत्तर
4x2 y - 3xy2 - 5xy2 + 5x2y = 4x2y + 5x2y - 3xy2 - 5xy2
= x2y (4 + 5) + xy2 (- 3 - 5)
= 9x2y - 8xy2
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