Question

For what value of k the quadratic equation kx2 + 11x - 4 = 0 has real roots

Answer 1

here is your answer which you want

Answer 2

2kx+11x-4=0
for having real roots d is more than 0
b^2-4ac is more than 0
(11)^2-4(2k)(-4)=0
121+32k=0
32k=-121
k=-121/32