Question 71

The value of k, for which the quadratic equation $$ 4x^{2} + 4 \sqrt{3x} + k = 0 $$ has equal roots is:

Solution

For roots to be equal , D = $$b^2 - 4ac$$ = 0

$$b^2 - 4ac$$ = 0

48 = 16k

k = 3.

So , the answer should be option b)3.

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