If a, b, c ϵQ, then the roots of the equation (b+c−2a)x2+(c+a−2b)x+(a+b−2c)=0 are
A
Rational
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B
Irrational
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C
Integers
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D
Complex
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Solution
The correct option is D Rational Put A=b+c−2a B=c+a−2b C=a+b−2c ∴A+B+C=0 So equation can be written as Ax2+Bx+C=0 where A+B+C=0 Since A+B+C=0 ∴ Roots are 1orCA ∴ Roots are rational