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Class 11 Mathematics Chapter 5 Complex Numbers And Quadratic Equations Quiz 1 (25 MCQs)

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1. Identify the real part and the imaginary part of the complex number-10 + 4i.
2. Factor3a$^{2}$ + 4a + 1
3. The discriminant of a quadratic equation is $20.$
4. Use the Discriminant to determine the type of solutions:$-3x^2+7x-1=0$
5. What letter represents an imaginary number?
6. What is the result of (1 + i)(1-i)?
7. What is the result of multiplying (2 + 3i) by its conjugate?
8. Compute (-2 + 4i) + (3-9i) and write the result in standard form a + bi.
9. What is the real part of the complex number z = 2 + 5i?
10. 3i(4-9i)
11. What is the result of (2 + 3i) + (4-2i)?
12. What is the result of (2 + 3i) + (2-3i)?
13. Which of these describes the solution(s) to $x^2 + 6x + 8 = 0$
14. What is the additive inverse of a complex number z?
15. Subtract. (4-2i)-(3 + 6i)
16. Compute i(2 + i) and write the result in standard form a + bi.
17. Solve6x$^{2}$ + 17x + 12 = 0
18. What is the difference of the expression (4 + 4i)-(8-2i)?
19. Simplify $\sqrt{-81}$
20. Simplify $\sqrt{-99}$
21. $i^{15}=$
22. Which quadratic expression is written in standard form?
23. Compute (5 + 2i) + (3-2i) and write the result in standard form a + bi.
24. What is the factored form of x$^{2}$+16x+15
25. Simplify(12-4i) + (-2 + 8i)
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