Question

find the value of k for which the equation 4x²-kx+1=0 has real and distinct roots​

Answer 1

Answer:

4x²-kx+1 = 0

a= 4 b=(-k) c = 1

b²-4ac =D

D = 0

k² - 16 = 0

k² = 16

k = 4

Answer 2

Answer:

k>.+-4

if discriminant is >0 the root r real and distinct

if it is =0the roots are real and equal

if it is <0the roots are imaginary