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Class 11 Mathematics Chapter 5 Complex Numbers And Quadratic Equations Quiz 4 (25 MCQs)

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1. What are the solutions to $y^2-13y + 40 = 0$
2. Describe the nature of the roots for the equation $49x^2-28x + 4 = 0$
3. What is the polar representation of a complex number?
4. What is the multiplicative inverse of a complex number z?
5. What is the result of (1 + 2i)-(3-i)?
6. Rewrite:$i^2$
7. Divide. $\frac{1}{9i}$
8. Compute (2 + 3i)(1-4i) and write the result in standard form a + bi.
9. The equations of two lines are:2x-y=4 and y=-2x+8. What is the value of x in the solution for this system?
10. Value of iota, $i$
11. What is the discriminant $\left(b^2-4ac\right)$ $x^2-8x + 7 = 0$
12. Which law states that the product of two complex numbers is also a complex number?
13. What is the conjugate of the complex number z = 2-3i?
14. What is the conjugate of 7-5i
15. What are the solutions to the system of equations? $f:y =-\frac{1}{2}x^2$ $g:y =-x-4$
16. What is the algebraic form of a complex number?
17. What is the conjugate of 7i?
18. The quadratic formula can be used to solve ANY quadratic equation.
19. Compute-i + (7-5i)-3(2-3i). Write the result in standard form a + bi.
20. $i^{19^{ }}=$
21. I$^{66}$
22. What is the conjugate of 5?
23. What is the product of the complex numbers (3 + 2i) and (1-i)?
24. What is the result of (1 + 2i)(3 + 4i)?
25. $-\\sqrt[]{-72}$
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