Complex Conjugates Multiply

What type of number is the result of multiplying a complex number and its conjugate?

• Natural Number

• Imaginary Number

• Irrational Number

• Real Number

Tags

CCSS.HSN.CN.C.8

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

• 21

• 29

• 29-10i

Tags

CCSS.HSN.CN.C.8

What is the conjugate you would multiply by?

• -1-5i

• 1+5i

• 1-5i

• -1+5i

Tags

CCSS.HSN.CN.A.3

What is the conjugate you would multiply by?

• 5+2i

• 5-2i

• -5-2i

• -5+2i

Tags

CCSS.HSN.CN.A.3

• A

• B

• C

• D

Tags

CCSS.HSN.CN.A.2

• 21 - 16i

• 21 -24i

• 11 - 16i

• 11 - 24i

• A
• B
• C
• D

Tags

CCSS.HSN.CN.A.2

What is the conjugate you would multiply by?

• 2+i

• 2-i

• -2+i

• -2-i

Tags

CCSS.HSN.CN.A.3

• A

• B

• C

• D

Tags

CCSS.HSN.CN.A.2

What is the denominator after multiplying and before simplifying?

• 17

• 13

• 5i

• 15i

Tags

CCSS.HSN.CN.A.3