Question

Find the value of k for which the roots of the quadratic equation (K - 4) x² + 2 ( k - 4 )x + 2 is= 0 are equal.​

Answer 1

Answer:

Note that the roots of a quadratic equation are equal if the discriminant of the equation is zero. Substitute the values in the discriminant formula and put the discriminant equal to zero and solve the new equation for "k".