Polynomials and Complex Numbers

What does i² =  ?

• 1

• -1

• √-1

• √1

Tags

CCSS.HSN.CN.A.1

Multiply: 
(4 – 3i)(-7 – 2i)

•   -23 + 13i

•   -23 - 29i

•   -34 + 13i

•   -34 - 29i

Tags

CCSS.HSN.CN.A.2

Simplify:

(10 + 15i) - (48 - 30i)

• 58 - 45i

• 58 - 15i

• -38 - 15i

• -38 + 45i

Tags

CCSS.HSN.CN.A.2

Find the sum.

(5 - 2i) + (-7 + 8i)

• -2 + 6i

• 12 + 6i

• -35 - 16i²

• -35 - 16i

Tags

CCSS.HSN.CN.A.2

Tags

CCSS.HSN.CN.C.8

If z=√2+√2 i then arg(z²)=

• 0^o

• 60^o

• 90^o

• Not Possible

Tags

CCSS.HSN.CN.B.4

i⁷⁹

• i

• 1

• -1

• -i

Tags

CCSS.HSN.CN.A.2

3+√-4

• 1

• 3-2i

• 5

• 3+2i

Tags

CCSS.HSN.CN.A.2

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

Tags

CCSS.HSN.CN.A.2