Question

Find 'K' so that roots of equation
KX²-2X-K=0 are real​

Answer 1

Answer:

b2−4ac=0

(2) {}^{2} - 4(k)(1) = 0(2)

2

−4(k)(1)=0

4 = 4k4=4k

k \: = 1k=1

thanks