Parts of Complex Numbers

Simplify the following expression:

-3(7-4i)

• -21+12i

• -10+12i

• -21+4i

• 21-12i

Simplify the following expression:

-4i(9+7i)

• 28-36i

• -36i-28i²

• -36i-28

• -13i+28i

Simplify the following expression:

-12i(-2-4i)

• 24i-48

• -48-24i

• 24-48i

• -48+24i

Simplify the following expression:

(5-5i)(-2+3i)

• 25

• 10-15i

• 5+25i

• -10-15i

Simplify the following expression:

(-2+6i)(2-6i)

• 32+24i

• -32+24i

• -32+24i

• 40

Simplify the following expression:

(5+6i)(5-6i)

• 11

• 61

• -11

• 22

Which of the following is the complex conjugate for -5-19i

• -5-19i

• -5+19i

• -5+19i

• 5+19i

Simplify the following expression:

• 
• 
• 
• 

Simplify the following expression

• 
• 
• 
• 

Which of the following is a pure Imaginary number?

• 4+8i

• 2-i

• 16i

• -8+12i