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प्रश्न
Factorise: `(6 2/3)^2 - (2 1/3)^2`
योग
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उत्तर
`(6 2/3)^2 - (2 1/3)^2`
`= (20/3)^2 - (7/3)^2`
`= (20/3 + 7/3)(20/3 - 7/3)`
`= (27/3)(13/3) = 9 xx 13/3 = 39`
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Factorisation by Difference of Two Squares
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