Complex Numbers

Add. (3 + 2i) + (4-5i)

• 7 - 3i

• 7 + 7i

• 1 - 3i

• 1 - 7i

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

• -5 + i

• -9 + i

• -5 - i

• 9 - i

Subtract. (4 - 7i) - (-3 + 6i)

• 7 - 13i

• 7 - i

• 1 - 13i

• 1 - i

• -1

• i

• 1

• -i

i⁷⁹

• i

• 1

• -1

• -i

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

3+√-4

• 1

• 3-2i

• 5

• 3+2i

• 6 + 11i

• 6 - 5i

• -5

Use the Discriminant to determine the type of solutions: -3x^2+7x-1=0

• real

• 2 real

• 2 imaginary

• 3 real