Complex numbers

Simplify.
(5-i)(5+i)

• 26
• 24
• 25+i²
• 25-i²

(2i)(3i) = 

• 5i
• -5
• 6i
• -6

The expression (2 + 3i)² is equal to

• -5
• -5 + 12i
• 13
• 13 + 12i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

(3i)(-2+4i)

• -6+12i
• -12-6i
• -2+7i
• 12+6i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

(9+4i)/(-1-2i)

• -16+12i/5
• 9i-4/2
• -2+4i
• -17+14i/5

10/(5-3i)

• (35+21i)/34
• (25+15i)/17
• 10i
• 10i/3

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.3

3/5+5i

• 6-15i/29
• 18-15i/61
• 3-3i/10
• 2-2i/5

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.3

(1-3i)(2+5i)

• 22-i
• 16-i
• 17-i

Tags

CCSS.HSN.CN.A.2

(1-3i)(2+5i)

• 22-i
• 16-i
• 17-i

Tags

CCSS.HSN.CN.A.2

• A
• B
• C
• D

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.3