Question

If the equation x-bx+ 1 = 0 has two distinct real roots then
which of the following is correct?
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Answer 1

answer

(1) If the equation has exactly one real root, then d = 0

a^2 - 4 = 0

a^2 = 4

|a| = 2

(2) If the equation has two real roots, then d > 0

a^2 - 4 > 0

a^2 > 4

|a| > 2

(3) If the equation has two complex-valued roots, then d < 0

a^2 - 4 < 0

a^2 < 4

|a| < 2