Which method should I use to solve this quadratic equation?
Authored by Christopher Konkus
Mathematics
8th - 12th Grade
CCSS covered
Used 4+ times
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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quadratic Formula
Completing the square
Factoring
Square root method
Answer explanation
Since this seems unfactorable and a=3 (not 1) quadratic formula works as the last resort.
Tags
CCSS.HSA-REI.B.4B
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quadratic Formula
Completing the square
Factoring
Square root method
Answer explanation
Since a = 1 and b is even, completing the square is the way to go, if it is not factorable, which this is not.
Tags
CCSS.HSA-REI.B.4B
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quadratic Formula
Completing the square
Factoring
Square root method
Answer explanation
Since the parentheses squared is isolated, taking the square root of both sides is the best method
Tags
CCSS.HSA-REI.B.4B
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quadratic Formula
Completing the square
Factoring
Square root method
Answer explanation
This equation is very factorable
(x-5)(x+2)=0
Tags
CCSS.HSA-REI.B.4B
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Quadratic Formula
Completing the square
Factoring
Square root method
Answer explanation
you can choose either factoring (x-1)(x-5)
OR
completing the square because a=1 and b is even
Both are appropriate methods for this equation
Tags
CCSS.HSA-REI.B.4B
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quadratic Formula
Completing the square
Factoring
Square root method
Answer explanation
a is not equal to 1 and this doesn't seem easily factorable.
There is also not a GCF
Quadratic formula is the last resort, and appropriate for this equation
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quadratic Formula
Completing the square
Factoring
Square root method
Answer explanation
If you factor out the GCF of 5, a=1 and b is even making it easy to use completing the square.
Tags
CCSS.HSA-REI.B.4B
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