Solving Quadratics Square Roots Review

Simplify: √-400

• 20
• ± 20i
• 400i

Simplify √-40

• ± 2√10
• ± 2i√10
• ± 4√10
• ± 10i√2

(7 - 3i) - (4 - 2i) + (8 + 5i)

• 11 + 4i
• 11 
• -5 + 4i
• 19 + 4i

Tags

CCSS.HSN.CN.A.2

Multiply: (3 + 2i)(4 - 7i)

• 12 - 13i - 14i²
• 26 - 13i
• 12 - 27i
• 7 - 5i

Tags

CCSS.HSN.CN.A.2

Simplify: (3 - 5i)/(2 + 9i)

• (6 - 37i + 45i²)/(4 - 81i²)
• (51 - 37i)/85
• (-39 - 37i)/85
• 3/2  - 5/9i

Tags

CCSS.HSN.CN.A.3

Solve: x² - 32 = 0

• x = ±√32
• x = ±4√2
• x = ±2√4
• x = ± 16√2

Tags

CCSS.8.EE.A.2

Solve 16x² + 32 = 0

• x = ± i√2
• x = ± 2i
• x = √-2
• x = -2

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve 3(x - 5)² + 16 = 0 

• x = 5 ± (4i√3)/3
• x = ± (√-16)/3
• x = 5 ± 4/3
• x = -5 ±16i/3

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

#9) 4x² + 24x + 12 = 0
What's the first step in completing the square?

• Factor the Equation
• Add 144 to both sides
• Subtract the 12 to the other side and/or divide everything by 4

Tags

CCSS.HSA-REI.B.4B

#9) For the equation x² + 6x = -3 what number needs to be added to both sides to complete the square?

• 6
• -3
• 3
• 9

Tags

CCSS.HSA-REI.B.4B