Applying properties of operations on complex numbers to solve problems

What is the product of (7 - 2i) and its conjugate?

• 5i

• 33

• 10i

• 14

• -7

• 49i

• -49

• -49i

(3 - 3i)(5 - 7i)

• -6 - 36i

• 36 + 6i

• -6 + 36i

(2-3i)(2+3i)

• 13

 $\left(4-3i\right)\left(-7-2i\right)$  

•  -23 + 13i

•  -23 - 29i

• -34 + 13i

•  -34 - 29i

(5 - i )( 5 - i )

• 15-8i
• 36
• 24+10i
• 24-10i

 $\left(7+2i\right)\left(9-6i\right)$  

• 75-24i

• 63 - 24i - 12i²

• 51 - 24i

• 58 + 60i

• -3

• 9i

• -9

• -9i

Simplify:

(1 + i)(1 + i)A. -2B. 2iC. -2iD. 2

• -2

• 2i

• -2i

• 2