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Practice with Quadratic Formula

Authored by Kelly Turner

Mathematics

9th Grade

Used 7+ times

Practice with Quadratic Formula
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20 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Determine the values of

a, b, and c:

x2 – 2x – 3 = 0

a = x2, b = -2, c = -3

a = 1, b = -2, c = -3

a = 1, b = 2, c = 3

a =1, b = -2, c = 3

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Name "c" for the equation
4x2 - 5x + 7 = 10

7
17
-5
-3

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What should you do first in solving this equation?

x2 + 6x - 13 = 3

Factor

Write down: a = 1, b = 6, c = -13

Subtract 3 from both sides.

Add 3 to both sides.

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The discriminant is

aX2  + bX  +  c
b - 4ac
b2 - 4ac
b2 + 4ac

5.

MULTIPLE CHOICE QUESTION

5 mins • 5 pts

Simplify 
√-25

-5i
5
5i
-5

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Given the equation 10x2 -6x=0, what is the value of C?

0

-6

10

x

7.

MULTIPLE CHOICE QUESTION

5 mins • 5 pts

Simplify the following radical: √24

2√6
4√6
2√12
3√8

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