Easy
1 point
ID: #23934
Question
√-8 × √-2 = কত?
Options
1
4
Correct Answer
2
4i
Correct Answer
3
-4
Correct Answer
4
-4i
Correct Answer
Explanation
√-8 = √(8)i = 2√2i এবং √-2 = √(2)i = √2i। গুণফল = (2√2i) × (√2i) = 2 × 2 × i² = 4 × (-1) = -4। (যেহেতু i² = -1)।