Operations on Complex Numbers

Write  $\sqrt{-9}$  in the form  $a+bi$  .

• 3i

• 9i

• 3

• 9

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Simplify. Write your answer in the form  $a+bi$  .

 $\left(2+4i\right)-\left(1-2i\right)$  

•  $3+2i$  

•  $1-2i$  

•  $1+6i$  

•  $10$  

Tags

CCSS.HSN.CN.A.2

Simplify. Write your answer in the form $a+bi$  .

 $\left(5i\right)^2$  

•  $25i^2$  

•  $-25$  

•  $5i^2$  

•  $25$  

Tags

CCSS.HSN.CN.A.1

Simplify. Write your answer in the form $a+bi$  .

 $3i\left(-1+5i\right)$  

•  $-3i+15i^2$  

•  $-1+8i$  

•  $12i$  

•  $-15-3i$  

Tags

CCSS.HSN.CN.A.2

Simplify. Write your answer in the form $a+bi$  .

 $\left(5-3i\right)\left(-2+4i\right)$  

•  $2+26i$  

•  $3+i$  

•  $-10-12i^2$  

•  $-22+14i$  

Tags

CCSS.HSN.CN.A.2

Simplify. Write your answer in the form $a+bi$  .

 $\left(-3+2i\right)\left(1+5i\right)$  

•  $-2+7i$  

•  $-13-13i$  

•  $-3+10i^2$  

•  $7+13i$  

Tags

CCSS.HSN.CN.A.2

Simplify. Write your answer in the form $a+bi$  .

 $\left(-2-i\right)^2$  

•  $5$  

•  $5-4i$  

•  $3+4i$  

•  $4+i^2$  

Tags

CCSS.HSN.CN.C.8

How are you feeling about Operations on Complex Numbers (Adding, Subtracting, & Multiplying)?

• Complex Numbers??? I NEED HELP!!!

• I can do these with some help and need some extra practice.

• I'm pretty confident and can do these on my own.

• I could teach a class on this!

Tags

CCSS.HSN.CN.A.2