Operations with complex numbers

What is the simplified form of

(-9 + 5i) + (3 - 2i)?

• -12 + 31i

• -6 + 3i

• -11 + 7i

• 5 - 3i

What is the simplified form of

(11 - 7i) - (-3 + 12i)?

• 8 - 19i

• 8 + 5i

• 13 - 19i

• 14 - 19i

What is the simplified form of (-6i)(3i)?

• -18

• -18i

• 18

• -18i²

What is the simplified form of

(-3 + 2i)(1- 4i)?

• -2 - 2i

• 5 + 14i

• -11 - 10i

• -3 - 8i

What is the simplified form of (8 - 3i)²?

• 73

• 16 - 6i

• 55 + 48i

• 55 - 48i

Multiply

3i(-2 + 4i)

• -6 + 12i

• -12 - 6i

• -2 + 7i

• 12 + 6i

What does  $i^2$ equal? 

• -1

•  $\sqrt{-1}$  

• 1

•  $-\sqrt{1}$  

What is the conjugate of -2 + 5i?

• -5 + 2i

• -2 - 5i

• 2 + 5i

• 5 - 2i

 $i^{37}$  

• i

• -i

• 1

• -1

Tags

CCSS.HSN.CN.A.2

(7 - 5i)(7 + 5i)

• 74
• 24
• 49 - 25i
• 49 + 25i

Tags

CCSS.HSN.CN.C.8