Applying properties of operations on complex numbers to solve problems

• A

• B

• C

• D

The expression (2 + 3i)² is equal to

• -5

• -5 + 12i

• 14

• 13 + 12i

4i(5i+2)

• -20+8i

• 20+8i

• -20+i

• -9+6i

 Simplify $\left(5+i\right)\left(5-i\right)$  

• 26

• .

Simplify:

-2(6 - 2i)

• -12 - 4i

• 12 - 4i

• -12 + 4i

• 12 + 4i

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

 $\left(5i\right)^2$  

•  $25i^2$  

•  $-25$  

•  $5i^2$  

•  $25$  

(4-5i)(4+5i)

• 41
• -9
• 41+40i
• -9+40i

Find all equivalent forms of (4 - i )(5 + 2i )

• 20 - 5i + 8i - 2i ²

• 22 + 13i

• 22 + 3i

• 20 + 3i + 2

Simplify:  $\left(11+5i\right)\left(11-5i\right)$  

•  $146$  
  

•  $121+110i$  
  

•  $121-110i$  

•  $121-25i^2$