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

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1. (1-3i)(2+5i)
2. What are the x-intercepts of the function f(x) = (x + 4)(x-7)
3. Solve:$x^2+5x+9=0$
4. What is the conjugate of 3-2i?
5. What expression is used to determine the number of real solutions of a quadratic equation?
6. Which of these describes the solution(s) to the equation $-3x^2 + 5x-11 = 0$
7. How many real solutions are there in the equation below? $x^2-10x+25$
8. 10/(5-3i)
9. $-\frac{x^2}{4}+3=19$
10. Compute (-3 + 7i)(1-2i) and write the result in standard form a + bi.
11. If the complex number z = x + iy satisfies the condition |z + 1| = 1, then z lies on
12. $i^{-35^{ }}=$
13. -6i+3i
14. Write the product (2 + 7i)(2-7i) in the form a + bi.
15. Which of these describes the solution(s) to the equation $x^2-8x + 7 = 0$
16. Simplify i$^{23}$
17. What is the simplifies form of (11-7i)-(-3 + 12i)
18. What symbol is used to denote the imaginary unit?
19. What is the conjugate of-2 + 4i?
20. What is the imaginary part of the complex number z =-1 + 3i?
21. Simplify:(7 + 2i)(9-6i)
22. (-6+2i)-(-1-3i)-(-1+3i)
23. The conjugate of $-4-7i$
24. What is the difference of the expression (11-5i)-(7-4i)?
25. Richard tosses a ball into the air. The function $h(t) =-5t^2 + 10t + 6$
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