Question

$l,m,n$ the real, $l\, \ne\, m$, 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

Answer 1

Answer: (C)

real and unequal

Answer 2

Discriminant $= 25 (l + m)^2 + 8 (l - m)^2 > 0$ $\therefore$ roots are real and unequal.