Question

Find the value of k for which the root of quadratic equation kx (X - 2 ) + 6 = 0 are equal

Answer 1

for real and equal root we b2-4ac=0
so compare it with ax2+bx+c
we 4k2-24k=0
4k(k-6)=0
so
4k=0,
k=6
so two values of k is 0 and 6