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प्रश्न
Simplify, giving Solution with positive index
(- 4x) (-5x2)
योग
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उत्तर
(- 4x) (-5x2)
`= (-1 × 4 × x) . (-1 × 5 × x^2)^1 `
`= - 1 × 4 × x . - 1 × 5 × x^2`
`= - 1 xx - 1 xx 4 xx 5 xx x^(1 + 2)`
`= -1^(1+1). 4^1 . 5^1 x^3 = 20x^3`
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