4.6-4.7 Quiz

What is the simplest form of (11 - 7i) - (-3 + 12i)

• 8 - 19i

• 8 + 5i

• 13- 19i

• 14 -19i

What is the simplified form of (-6i)(3i)

• -18

• -18i

• 18

• -18i²

Tags

CCSS.HSN.CN.A.2

3i(4 - i)

• 9i

• -3 +12i

• 12 - 3i

• 3 + 12i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

 $\left(3-4i\right)\left(5+6i\right)$  

• 39 +38i

•  $15\ -2i\ -24i^2$  

• 39 - 2i

• 9 - 2i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Solve:

x² = -121

• ± 11

• ± 11i

• ± 12

• 11i

Solve for x: x² - 5x + 8 = 0

• x = (-5±i√7)/2
• x = (5±i√7)/2
• x = (8±i√7)/2
• x = (5±√57)/2

Tags

CCSS.HSA.REI.B.4

Solve for x:

• x = {-3+2i, -3-2i}
• x = {7, 6}
• x = 2±i√3
• No solution

Tags

CCSS.HSA.REI.B.4

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.C.9

Use the discriminant to predict the number and type of solutions of  $3x^2-1=x$ .  Do not solve.

• Two imaginary/complex solutions

• Two real solutions

• One real solutions

• One imaginary/complex solution