Math 4 ACT 1

What is the complex conjugate of  4-3i?

• A.  1/(4-3i)
• B. 1/(4+3i)
• C.  -4 + 3i
• D.  4 + 3i

Tags

CCSS.HSN.CN.A.3

Simplify:
i⁷

• i
• -i
• 1
• -1

Tags

CCSS.HSN.CN.A.1

Solve
3x² - 5 = -446

• ±√-147
• 7i√3
• ±7i√3
• -7√3

Tags

CCSS.8.EE.A.2

Simplify:
√-108

• 3i√6
• 3i√20
• 6i√3
• 20i√3

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

Simplify 
√-25

• -5i
• 5
• 5i
• -5

Simplify:
3√-81

• -27
• 3i√3
• 27i
• 9i

Simplify -4√-63

• 3i√7
• -12i√7
• -12√7
• 36√7

Simplify
3i - (4 + 7i)

• -4 + 10i
• 21 - 12i
• 4 - 10i
• -4 - 4i

Tags

CCSS.HSN.CN.A.2

Simplify the expression:
 $\left(1\ +\ 5i\right)\ +\ \left(1\ -\ 5i\right)$  

•  $2\ +\ 10i$  

•  $2\ +\ 10i^2$  

•  $2$  

•  $-8$  

Tags

CCSS.HSN.CN.A.2