Powers of i and Complex Numbers

i⁷

• i
• -i
• 1
• -1

i¹²⁹

• -i
• i
• 1
• -1

(2i)(3i)

• 5i
• -5
• 6i
• -6

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

• 15i
• -15i
• -15i³
• 15i³

Simplify:

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

• 58 - 45i

• 58 - 15i

• -38 - 15i

• -38 + 45i

Find the sum.
(5-2i) + (-7+8i)

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Multiply:

(1 − 2i)(6 + 5i)

• 16 − 7i

• -16 + 7i

• -16 − 7i

• 16 + 7i

Multiply:

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

• 29

• 4 - 25i

• 25 - 10i

• -21

What is the conjugate of the following...

 $4+i$  

• 4 + i

• -4 + i

• -4 - i

• 4 - i

(5-i)(5-i)

• 15-8i
• 36
• 24+10i
• 24-10i