Imaginary numbers/Complex numbers review

Multiply: 
(4 – 3i)(-7 – 2i)

• A.  -23 + 13i
• B.  -23 - 29i
• C.  -34 + 13i
• D.  -34 - 29i

Tags

CCSS.HSN.CN.A.2

What is the conjugate of -2+5i?

• -5+2i

• -2-5i

• 2+5i

• 5-2i

Tags

CCSS.HSN.CN.A.3

Simplify:  (4+2i)/(3-i)

• 1-i
• 1+i
• 10+10i
• 1+10i

Tags

CCSS.HSN.CN.A.3

(-3-i)(6-i)

• -21-7i
• -19-3i
• -15-5i
• -17-9i

Tags

CCSS.HSN.CN.A.2

(7-5i)(7+5i)

• 74
• 75
• 74-1

Tags

CCSS.HSN.CN.C.8

What is the conjugate of 2 + 3i?

• 2 - 3i

• -2 + 3i

• -2 - 3i

• 2 + 3i

Tags

CCSS.HSN.CN.A.3

What is the conjugate of -5 + 4i

• 5 + 4i

• 5 - 4i

• -5 - 4i

• -5 + 4i

Tags

CCSS.HSN.CN.A.3

What is the conjugate of 4i?

• 4i

• 4 + 4i

• 4-4i

• -4i

Tags

CCSS.HSN.CN.A.3

 $\frac{5-8i}{3+2i}$  , what do you do to divide?

• Multiply the top and bottom by 3-2i

• Multiply the top and bottom by 5 + 8i

• multiply the top by 5 + 8i and the bottom by 3 - 2i

• Multiply the top and bottom by -3 - 2i

Tags

CCSS.HSN.CN.A.3

• A
• B
• C
• D

Tags

CCSS.HSN.CN.A.3