Complex Numbers

(5i+2)+(5i-2) equals to (a)  

• 5i
• -25
• 10i
• 10i+4

Tags

CCSS.HSN.CN.A.2

i¹⁰²

• 1

• -1

• i

• -i

Tags

CCSS.HSN.CN.A.2

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

• -25i
• 4-25i²
• 29
• 21

Tags

CCSS.HSN.CN.C.8

i times i

• -1
• 1
• imaginary
• i

Tags

CCSS.HSN.CN.A.2

What is the sum of the complex numbers (12 - 5i) and (-3 + 4i)?

• A. 9 - i
• B. 15 - 9i
• C. -16 + 63i
• D. 9 - 9i

Tags

CCSS.HSN.CN.A.2

The expression (2 + 3i)² is equal to

• -5
• -5+12i
• 13
• 13 + 12i

Tags

CCSS.HSN.CN.C.8

• 10
• -10
• 10i
• -10i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.B.4

CCSS.HSN.CN.C.7

Which expression is equivalent to (-6 + i)²?

• 36 - 12i
• 35 - 12i
• 36i²
• 35i

Tags

CCSS.7.EE.A.1

i¹³

• -1
• 1
• i
• -i

Tags

CCSS.HSN.CN.A.2

7i + 2i

• 9i²
• 9
• 9i
• 9 - i

Tags

CCSS.HSN.CN.A.2