Question

find the value of k so that the roots of the equation for (4+K)x^2 +( K + 1 )x+ 1 = 0.may be equal

Answer 1

here's your answer
we know that for equal roots of a quadratic equation , its discriminant should be zero....
so , simply put the expression b^2 - 4ac equal to zero...and by further solving it you will get the answer..