Solving Quadratic Equations by Completing the Square

Quiz
•
Mathematics
•
9th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve by completing the square.
x2 +12x = 5
X = 6 + √41 or 6 − √41
X= 35 or 47
X = −6 + √41 or −6 − √41
X = √35 or √47
Tags
CCSS.HSA-REI.B.4B
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What do you do to the b value to correctly complete the square?
square it
divide it by 2 and square the result
divide it by 2 and take the square root of the result
divide it by 2 only
Tags
CCSS.HSA-REI.B.4B
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When factoring
x2 - 4x + 4 = 20,
what goes in the blank?
(x - __ )2 = 20
4
2
8
20
Tags
CCSS.HSA-REI.B.4B
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When do you use the plus or minus symbol?
±
After taking the square root of both sides
After adding the square to both sides
After taking half of b
After setting the equation equal to zero
Tags
CCSS.HSA-REI.B.4B
5.
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
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Write the following quadratic expression in completed square form...
x2 + 6x = 5
(x + 3)2 = 5
(x + 6)2 = 9
(x + 3)2 = 14
(x + 6)2 = 14
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Write the following quadratic expression in completed square form... x2 + 4x + 10
(x + 4)2 + 6
(x + 2)2 + 6
(x + 4)2 - 6
(x + 2)2 - 6
Tags
CCSS.HSA-REI.B.4B
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