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Solving Quadratic Equations

Authored by Erin Hooper

Mathematics

8th - 9th Grade

Used 5+ times

Solving Quadratic Equations
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22 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 5 pts

x2 = 81

9
-9
40.5
-9,9

2.

MULTIPLE CHOICE QUESTION

5 mins • 5 pts

Solve by taking the square root:
(x + 6)2 = 1

-5, -7
5, 7
5, -7
-5, 7

3.

MULTIPLE CHOICE QUESTION

15 mins • 5 pts

Solve by taking the square root:
2(x - 3)2 - 14 = 18

1, 7
-1, 7
-1, -7
1, -7

4.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

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

b = 9, b = -9
b = 3, b = -3
b = 8, b = -8
no solutionb

5.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Solve for x: 
(x+6)2=49

x=7,12
x=±7
x=1,-13
x=43,-55

6.

MULTIPLE CHOICE QUESTION

15 mins • 5 pts

-3x2 = 99

√33
√33, -√33
No Real Solutions
-√33

7.

MULTIPLE CHOICE QUESTION

5 mins • 5 pts

What is the first step to solving THIS equation by completing the square?
a2 + 10a + 21 = 0

Set the equation equal to zero
Divide 10 by 2 and add the result to both sides
Add a2 and 10a together
Subtract the 21

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