Solve Equations with Complex Numbers

Solve for x: 

• x = {-4, -1}

• x = {-1, -4}

• x = {2+i, 2-i}

• x = {-2+i, -2-i}

Simplify.

• -5i

• 5

• 5i

• -5

√(-300)

• 10i√3

• 15√15

• -10√3

• 2i√13

Another way to express √-1 is?

• 1

• -1

• i

• 0

3+√-4

• 1

• 3-2i

• 5

• 3+2i

If z=√2+√2 i then arg(z²)=

• 0^o

• 60^o

• 90^o

• Not Possible

Lisa wants to buy two new dresses from the mall. If one dress costs (59 - 6i) and the other costs (34 + 17i), how much money will she need to bring to the mall?

• 82 dollars

• 93 + 11i dollars

• 93 - 23i dollars

• 25 - 23i dollars

i⁷⁹

• i

• 1

• -1

• -i

Leon is asked to simplify √-120. A good first step would be to...

• divide 120 by 2

• replace the negative with an i on the outside of the radical

• take the square root of -120

• graph y = √-120