Question

If the discriminant of the equetion kx2+3x+4=0is 25 then value of k is

Answer 1

b^2 - 4ac = 25

(3)^2 - 4×k×4 = 25

9 - 16k = 25

- 16k = 25-9 = 16

k = - 16/16 = - 1

So , the value of k is -1