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