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`x^(2)+(1)/(81)-(2)/(9)x` के गुणनखण्ड कीजिए |

Answer» `x^(2)+(1)/(81)-(2)/(9)x=x^(2)-(2)/(9)x +(1)/(81)`
`= x^(2)-(2)/(9)x +((1)/(9))^(2)=x^(2)-2.(1)/(9).x+((1)/(9))^(2)`
`=(x-(1)/(9))^(2) " " [because a^(2)-2ab+b^(2)=(a-b)^(2)]`


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