Q24 of 78 Page 14

Mark the Correct alternative in the following:

The least value of k which makes the roots of the equation imaginary is


given that the equation has imaginary roots, hence the discriminant is less than 0.

= 25-4k<0


When we submit 7 in k the condition above will be satisfied and when we replace 6 the condition will be false.


So the least value of k is 7.

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