Solving Quadratics Part 1

What are the solutions?

• -2, 1
• 1, 2
• -1,2
• 0,-4

What are the solutions?

• -.5, 3.5
• 0,6
• -2.5, 4.5
• -1, 4

Solve the equation using square roots.
x² = 121

• 60.5
• ± 11
• ± 12
• 11

Tags

CCSS.8.EE.A.2

Miked solved the equation x² + 8x = 14 by completing the square. Which of the following equations is part of the correct solution.

• (x + 4)² = 14
• (x + 4)² = 18
• (x + 4)² = 30
• (x+ 4)² = 30

Tags

CCSS.HSA-REI.B.4B

Solve
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solution

Tags

CCSS.HSA-REI.B.4B

1 The discriminant is

• aX² + bX + c

• b - 4ac

• b² - 4ac

• b² + 4ac

Tags

CCSS.HSA-REI.B.4B

1 What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

Tags

CCSS.HSA-REI.B.4B

2 For the function below, is the discriminant positive, negative, or zero?

y = x² + 4x + 4

• Positive

• Negative

• Zero

Tags

CCSS.HSA-REI.B.4B

2 A function has a discriminant of 0.

How many x-intercepts does it have?

• 0

• 1

• 2

• 5