
Exploring the Quadratic Formula and Discriminant

Interactive Video
•
Mathematics
•
8th - 12th Grade
•
Hard
Standards-aligned

Ethan Morris
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the standard form of a quadratic equation?
ax^2 = bx + c
ax + b = 0
ax^2 + bx + c = 0
ax^2 + bx = c
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which part of the quadratic formula is under the square root?
c
b^2 - 4ac
2a
b
Tags
CCSS.HSA-REI.B.4B
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in deriving the quadratic formula by completing the square?
Multiply by 2
Add b to both sides
Divide by a
Subtract c from both sides
Tags
CCSS.HSA-REI.B.4B
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When simplifying expressions, what should you be cautious about?
Dividing by zero
Adding fractions
Cancelling common factors
Multiplying by zero
Tags
CCSS.HSA.APR.D.7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the common mistake referred to as 'cancel happy'?
Multiplying terms incorrectly
Dividing terms incorrectly
Adding terms incorrectly
Cancelling terms that are not common factors
Tags
CCSS.HSA.APR.D.6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should you do first when solving a quadratic equation using the quadratic formula?
Set the equation equal to zero
Identify the values of a, b, and c
Multiply both sides by a
Take the square root of both sides
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the discriminant in the quadratic formula?
2a
b^2 - 4ac
c
b
Tags
CCSS.HSA-REI.B.4B
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