Question

If the equation x² - bx + 1 = 0
has two distinct real roots then
which of the following is correct?
(a)b²-4a > 0
(b) b²-4>0
(c) b²-4c>0
(d) b²-4 = 0​

Answer 1

if roots are real and equal

ie d=0

d=b2-4ac=0