Quadratic Formula Error
Authored by Anthony Clark
Mathematics
10th Grade
CCSS covered
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14 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is this formula?
This is the speed of light formula.
This is the quadratic formula.
This is the zero product property.
This is scary.
Tags
CCSS.HSA-REI.B.4B
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the quadratic formula to find the solutions for
y = -x2 - 5x + 12
-4.9 and -0.1
-8.54 and 8.54
-0.45 and 3.55
-6.77 and 1.77
Tags
CCSS.HSA-REI.B.4B
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The discriminant is
ax2 + bx + c
b - 4ac
b2 - 4ac
b2 + 4ac
Tags
CCSS.HSA-REI.B.4B
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Describe and correct the error a student made in solving an equation.
The student used b instead of −b in the first term in the numerator when substituting values into the formula
The student should have the equation as a(x−b)2+c=0 and then substituted those values into the Quadratic Formula.
The student dropped the negative sign in simplifying the expression (−5)2.
The student used a instead of 2a in the denominator when substituting values into the formula.
Tags
CCSS.HSA-REI.B.4B
5.
LABELLING QUESTION
1 min • 1 pt
b^2+4ac
a^2
b^2-4ac
-b
-b^2-4ac
2a
-2a
4ac-b^2
b
b^2
Tags
CCSS.HSA-REI.B.4B
6.
HOTSPOT QUESTION
1 min • 1 pt
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the quadratic formula?
Tags
CCSS.HSA-REI.B.4B
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