# Complex Numbers Chapter Exam

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Exam Progress:

### Page 1

#### Question 1 1. In the image below, the read line is the graph of a quadratic equation with two imaginary roots as solutions. From the graph, what are the solutions?

#### Question 2 2. The expression (1-i)(2+i) can be simplified to which of the following?

#### Question 3 3. What is the square root of -9?

#### Question 4 4. Mary is attempting to find the square root of a negative number. Her answer will be which of the following?

#### Question 5 5. Which of the following would be used to solve a quadratic equation with complex roots?

### Page 2

#### Question 6 6. In the equation x^2-10x+34=0, x is equal to which of the following solution sets?

#### Question 7 7. What number do you get when you multiply i by itself?

#### Question 8 8. For the graph below, which of the graphs has complex roots as a solution?

#### Question 9 9. The expression (3i+2)-(2i-5)+3 can be simplified to which of the following expressions?

#### Question 10 10. The expression (2+i)(2-i) can be simplified to which of the following?

### Page 3

#### Question 11 11. What is the square root of -144?

#### Question 12 12. The expression (3i-2)(1+i)-7 can be simplified to which of the following expressions?

#### Question 13 13. In the equation x^2+144=0, x is equal to which of the following?

#### Question 14 14. If the solutions to an equation are 3i and 2i+1, the discriminant would be which of the following?

#### Question 15 15. The expression (5+i)/(5-i) can be simplified to which of the following?

### Page 4

#### Question 16 16. Which of the following is a step in dividing by a complex number?

#### Complex Numbers Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. You will lose your work if you close or refresh this page. Good luck!