Originally Posted by

**Jgirl689** a) Find all solutions of the equation. (Write your answers in the form

*a* +

*b**i*. Enter your answers as a comma-separated list.)

Answers I got for this is -2 + 2i and -2-2i..I assume you just use the quadratic formula and solve..is that right?

b) Find the indicated power using De Moivre's Theorem.

Don't know if I did it right, but I got 1024i for this problem..can someone verify?

Code:

>> syms x;
>> solve('x^2 + 2*x + 5 = 0',x)
ans =
**- 2*i - 1**
**2*i - 1**

Code:

>> (1+ sqrt(-1))^20
ans =
**-1024**

These are the correct answers.