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प्रश्न
Add the given polynomials.
`x^3 - 2x^2 - 9 ; 5x^3 + 2x + 9`
उत्तर
`(x^3 - 2x^2 - 9) + (5x^3 + 2x + 9)`
`= x^3 + 5x^3 -2x^2 + 2x - 9 + 9`
`= 6x^3 - 2x^2 + 2x`
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