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प्रश्न
Multiply the given polynomial.
`2x ; x^2 - 2x - 1`
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उत्तर
`2x (x^2 - 2x - 1)`
`= 2x xx x^2 + 2x xx (-2x) + 2x xx (-1)`
`= 2x^3 - 4x^2 - 2x`
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