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For given equation x^(2) -ax+b=0 , match...

For given equation `x^(2) -ax+b=0` , match conditions in column I with possible values in column II
`{:("column -I " , "Colum-II"),("(A) If roots differ by unity then " a^(2)" is equal to" , "(p) b(ab+2)"),("(B) If roots differ by unity then " 1 + a^(2) " is equal to " , "(q) 1 + 4b"),("(C) If one of the root be twice the other then " 2a^(2) " is equal to " , "(r) 2(1+2b)"),("(D) If the sum of roots of the equation equal to the sum of squares of their reciprocal then " a^(2) " is equal to " , "(s) 9b"):}`

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A(q), B( r) , C(s) , D(p)
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