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Complex Numbers and Quadratic Equations Quiz

Class XI
Mathematics
Complex Numbers and Quadratic Equations
14 questions
HARD

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Preview questions

1. What is the value of i^4?

1 · i · -1 · 0

2. Which of the following is a purely imaginary number?

3 + 4i · 0 · 2 - 3i · 5i

3. If z = 3 + 4i, what is the modulus of z?

5 · 7 · 25 · 12

4. The roots of the equation x^2 + 4x + 5 = 0 are:

-2 ± i · 2 ± i · ±2 · 0

5. What is the conjugate of the complex number 7 - 2i?

7 + 2i · 7 - 2i · -7 + 2i · -7 - 2i