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Quadratic Formula and Completing the Square

Authored by Anthony Clark

Mathematics

9th Grade

CCSS covered

Quadratic Formula and Completing the Square
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is one of the solutions to this equation?
(2x - 1)2 = 49

7

-7

-4

-3

Tags

CCSS.HSA-REI.B.4B

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Determine the values of a, b, and c for the quadratic equation:

4x2 – 8x = 3

a = 4, b = -8, c = 3

a = 4, b =-8, c =-3

a = 4, b = 8, c = 3

a = 4, b = 8, c = -3

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Use the quadratic formula to solve 2x2 + 2x - 12.

-2, 3

2, 3

2, -3

-2, -3

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the formula for the discriminant?

x = -b/2a

b2 - 4ac

a2 + b2 = c2

x = [-b±√(b2-4ac)]/2a

Tags

CCSS.HSA-REI.B.4B

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the discriminant is equal to 4, how many solutions are there?

No Solutions

1 Real Solution

2 Real Solutions

2 Imaginary Solutions

Tags

CCSS.HSA-REI.B.4B

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the discriminant is equal to -2, how many solutions are there?

No Solutions

1 Real Solution

2 Real Solutions

2 Imaginary Solutions

Tags

CCSS.HSA-REI.B.4B

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