Exploring the Quadratic Formula and Discriminant
Interactive Video
•
Mathematics
•
8th - 12th Grade
•
Practice Problem
•
Hard
Standards-aligned
Olivia Brooks
FREE Resource
Standards-aligned
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for the discriminant?
b^2 * 4ac
b^2 / 4ac
b^2 - 4ac
b^2 + 4ac
Tags
CCSS.HSA-REI.B.4B
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the discriminant is less than zero, what type of roots does the quadratic equation have?
Two imaginary roots
One real root
Two real roots
No real roots
Tags
CCSS.HSA-REI.B.4B
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does it mean if the discriminant is exactly zero?
Two real roots
One real root
No real roots
Two imaginary roots
Tags
CCSS.HSA-REI.B.4B
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When the discriminant is positive, how many real solutions does the quadratic equation have?
One
None
Two
Infinite
Tags
CCSS.HSA-REI.B.4B
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the absolute value of a negative discriminant is a perfect square, what can be said about the quadratic equation?
It is not factorable
It is factorable
It has no solutions
It has one solution
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the discriminant of the equation y = x^2 - 15x - 250?
1225
250
225
1000
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a positive discriminant indicate about the roots of a quadratic equation?
Two imaginary roots
No real roots
One real root
Two real roots
Tags
CCSS.HSA-REI.B.4B
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