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  4. The number of integral values of m for which the equation, (1+m2)x2 - 2(1+3m)x + (1+ 8m) = 0 , has no real root, is :

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Q. The number of integral values of $m$ for which the equation, $\left(1+m^{2}\right)x^{2} - 2\left(1+3m\right)x + \left(1+ 8m\right) = 0 , $ has no real root, is :

JEE MainJEE Main 2018Complex Numbers and Quadratic Equations

Solution:

Correct answer is (b) 3