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प्रश्न
Find the sum of: 4x3 + 2x2 – x + 1, 2x3 – 5x2 – 3x + 6, x2 + 8 and 5x3 – 7x
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उत्तर
4x3 + 2x2 – x + 1, 2x3 – 5x2 – 3x + 6, x2 + 8 and 5x3 – 7x
4x3 + 2x2 – x + 1 + 2x3 – 5x2 – 3x + 6 + x2 + 8 + 5x3 – 7x
= 4x3 + 2x3 + 5x3 + 2x2 - 5x2 + x2 - x - 3x - 7x + 1 + 6 + 8
= 11x3 + 3x2 - 5x2 - 11x + 15
= 11x3 - 2x2 - 11x + 15
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