Complex Numbers

1. In the expression 3 + 8i, 8i is the ____________ part.

Real

Imaginary

Fake

Submit

7. I² = ___

1

-1

-(-1)

Sqrt(-1)

Submit

10. (3 + 2i) + (9 - 7i)

-5i + 12

12 + 9i

12 - 5i

9i + 12

Submit

12. 5 / (5 - 10i)

(1/5) - (2i/5)

(25 - 50i)

3/5

(1 - 2i)

13. Solve for x.

x² + 49 = 0

7

-7

7, -7

7i, -7i

Sqrt(-7)

14. Solve for x.

3x² + 1 = x² - 1

1, -1

I

I, -i

-1

15. Which of the following is an example of a pure imaginary number?

-8

1 + 8i

I / 8

12,876,215 + sqrt(-1)

Complex Numbers

1. In the expression 3 + 8i, 8i is the ____________ part.

2.

What first name or nickname would you like us to use?

2. (-6 - 5i)(1 + 3i)

3. (7 - 8i) - (12 + 7i)

4. (9 + 4i)²

5. Write the complex conjugate of ( 5 + 123i)

6. Sqrt(-169)

7. I² = ___

8. |16i|

9. (4 - 2i)(6 + 6i)

10. (3 + 2i) + (9 - 7i)

11. |3 + 4i|

12. 5 / (5 - 10i)

13. Solve for x.

x² + 49 = 0

14. Solve for x.

3x² + 1 = x² - 1

15. Which of the following is an example of a pure imaginary number?

Complex Numbers

1. In the expression 3 + 8i, 8i is the ____________ part.

2.

What first name or nickname would you like us to use?

2. (-6 - 5i)(1 + 3i)

3. (7 - 8i) - (12 + 7i)

4. (9 + 4i)2

5. Write the complex conjugate of ( 5 + 123i)

6. Sqrt(-169)

7. I2 = ___

8. |16i|

9. (4 - 2i)(6 + 6i)

10. (3 + 2i) + (9 - 7i)

11. |3 + 4i|

12. 5 / (5 - 10i)

13. Solve for x.x2 + 49 = 0

14. Solve for x.3x2 + 1 = x2 - 1

15. Which of the following is an example of a pure imaginary number?

4. (9 + 4i)²

7. I² = ___

13. Solve for x.

x² + 49 = 0

14. Solve for x.

3x² + 1 = x² - 1