Unit 3 - Imaginary & Solving

Simplify √-4

• 2i
• -2i
• 2
• 4i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

Simplify √-23

• -√23
• 23i
• 23
• i√23

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

Simplify √-81

• -√81
• -9i
• 9i
• 81i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

Simplify √-1

• 1
• -i
• -1
• i

Tags

CCSS.HSN.CN.A.1

Simplify √-25

• i√25
• 5i
• -5i
• 25i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

What does i² =  ?

• 1
• -1
• √-1
• √1

Tags

CCSS.HSN.CN.A.1

 $2i\cdot3i$  

• 5i

• -5

• 6i

• -6

Which is a solution to the equation

 $x^2\ +\ 13\ =\ 4$  

• 3 and -3
  

• 9i and -9i
  

• 9 and -9
  

• 3i and -3i
  

Which are the solutions to the equation

 $x^{2\ }=\ 36$  

• 6 only
  

• -6 only
  

• 6 and -6
  

• This equation has no solutions
  

Select all equations for which -3 is a solution.

• $x^{2\ }=\ 9$

• $x^{2\ }=\ -9$

• $x^{3\ }=\ 27$

• $x^{3\ }=\ -27$

• $-x^{2\ }=\ 9$