Question Detail

MTH 101 MTH 101 Past Questions Objective Question

Question

Which of these equations has complex roots?
Options
A x² + 1 = 0
Correct Answer
B x² - 3x + 2 = 0
C x² - 4 = 0
D x² + 2x + 1 = 0
Correct Answer

Option A is the correct answer.

Detailed Explanation

x² + 1 = 0 has discriminant -4, giving complex roots i and -i.

Hint

The notes indicate answer A.

Question Info