
Understanding Quadratic Equations and Discriminants

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard
Nancy Jackson
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What characteristic of an equation indicates that it is quadratic?
It has a linear term.
It includes a square term.
It has a constant term.
It includes a cube term.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation 2x^2 - 4x - t = 0, what is the value of 'a'?
4
-4
2
-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must be true for a quadratic equation to have no real solutions?
The discriminant is a perfect square.
The discriminant is positive.
The discriminant is zero.
The discriminant is negative.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If b = -4, a = 2, and c = -t, what is the expression for the discriminant?
b^2 - 2ac
b^2 + 2ac
b^2 - 4ac
b^2 + 4ac
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the equation 2x^2 - 4x - t = 0, what value of t results in no real solutions?
t = 1
t = 3
t = -3
t = 0
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