Question

if both the roots of the quadratic equation 8-kx-2x2=0 are equal but opposite in sing then the value of k is

Answer 1

Answer:

The quadratic will have real root only when its discriminant will be greater than or equal to 0

Discriminant of given equation =b

2

−4ac =(−8)

2

−4×1×k>0

⇒64−4k>0

⇒4k<64

⇒k<16

So, the value of k should be less than 16.