Understanding and using complex number notation

Can you create two complex numbers such that their product is a purely real number and explain your reasoning?

• 2 + i and -2 + i

• 3 + 4i and -3 + 4i

• 2 + 3i and 2 - 3i

• 1 + 2i and 1 + 2i

Tags

CCSS.HSN.CN.A.1

Tags

CCSS.HSN.CN.A.1

 $\sqrt{25}+\sqrt{-9}$  

Real or imaginary?

• real

• imaginary

• complex

Tags

CCSS.HSN.CN.A.1

Which of the following represents the (-6,3) in general form?

• -6i+3

• -6i-3

• -6+3i

• 3-6i

Tags

CCSS.HSN.CN.A.1

Tags

CCSS.HSN.CN.A.1

 $\sqrt{-81}$  

• Rational

• Irrational

• Imaginary

• Ratational

Tags

CCSS.HSN.CN.A.1

3+√-4

• 1

• 3-2i

• 5

• 3+2i

Tags

CCSS.HSN.CN.A.1

Tags

CCSS.HSN.CN.A.1

Tags

CCSS.HSN.CN.A.1

Simplify.

• -4 - i
• -4 + i
• -4
• i - 4

Tags

CCSS.HSN.CN.A.1