CW - Simplifying Imaginary Numbers (Accuracy Grade!)

 $\sqrt{-1}=$  

•  $\pm i$  

•  $\pm1$  

•  $-i$  

•  $1$  

Simplify

• 5i
• -5i
• ±5i
• ±

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Simplify

• ± 6
• ± 6i
• ± √6i
• ± √6

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Simplify

• ± 10i
• ± 10
• ± √10i
• ± √10

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

 $\sqrt{-64}$  

•  $8i$  

•  $\pm8$  

•  $8$  

•  $\pm8i$  

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

 $\sqrt{-12}$  

•  $\pm2i\sqrt{3}$  

•  $4i\sqrt{3}$  

•  $-2\sqrt{3}$  

•  $\pm-4i\sqrt{3}$  

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

 $\sqrt{-18}$  

•  $\pm3i\sqrt{2}$  

•  $\pm9i\sqrt{2}$  

•  $-3\sqrt{2}$  

•  $-9i\sqrt{2}$  

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

Simplify

• ± 4i √2
• ± 4 √2
• ± 2i √8
• ± 2 √8

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

Simplify

• ± 2i √10
• ± 2 √10
• ± 4i √10
• ± 4 √10

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4