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[" If "(x^(2)+x+1)/(x^(2)+2x+1)=A+(B)/(x...

[" If "(x^(2)+x+1)/(x^(2)+2x+1)=A+(B)/(x+1)+(C)/((x+1)^(2))" then "A-B=],[" (EAMCET-2008) "]

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I : If (x^(2)+x+1)/(x^(2)+2x+1)=A+B/(x+1)+C/(x+1)^(2) " then "A+B+C=0 . II : If (x^(2)+2x+3)/x^(3)=A/x+B/x(2)+C/x^(3) " then "A+B-C=0 .