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If l ,m ,n are real l!=m , then the root...

If `l ,m ,n` are real `l!=m` , then the roots of the equation `(l-m)x^2-5(l_+m)x-2(l-m)=0` are a. real and equal b. Complex c. real and unequal d. none of these

A

real and equal

B

nonreal complex

C

real and unequal

D

none of these.

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