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Q 3020023811.    

Assertion : If ` a+b+c=0` and a, b, c are rational, then roots of the equation ` (b+c-a )x^{2}+ (c+a-b )x+ ( a+b-c )=0 `are rational.

Reason : For quadratic equation given in Assertion, Discriminant is perfect square.

A Both A and R individually true and R is the correct explanation of A
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
D A is false but R is true

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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