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Question

If a,b,cR and ab, then both the roots of the equation 2(ab)x211(a+b+c)x3(ab)=0 are always

A
real and equal
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B
real and unequal
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C
non-real
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D
none of these
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Solution

The correct option is B real and unequal
2(ab)x211(a+b+c)x3(ab)=0

Δ=b24ac=121(a+b+c)2+24(ab)2>0 [ab]

Roots are real and unequal.

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