
Finding Real Irrational Roots with the Quadratic Formula

Interactive Video
•
Mathematics
•
9th - 12th Grade
•
Hard
Standards-aligned

Mia Campbell
FREE Resource
Standards-aligned
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step to solve a quadratic equation when it is not factorable?
Complete the square
Try to factorize again
Use the quadratic formula
Evaluate the discriminant
Tags
CCSS.HSA-REI.B.4B
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to identify a, b, and c in a quadratic equation?
To check if the equation is linear
To apply the quadratic formula correctly
To simplify the equation further
To determine the graph of the equation
Tags
CCSS.HSA-REI.B.4B
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the discriminant tell us about the roots of a quadratic equation?
Whether the roots are real or complex
How to factorize the equation
The exact values of the roots
The number of solutions to the equation
Tags
CCSS.HSA-REI.B.4B
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for the discriminant of a quadratic equation?
2a - b^2
b^2 + 4ac
4ac - b^2
b^2 - 4ac
Tags
CCSS.HSA-REI.B.4B
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the discriminant is a perfect square, what can be said about the roots?
The roots do not exist
The roots are rational
The roots are irrational
The roots are complex
Tags
CCSS.HSA-REI.B.4B
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if the discriminant is less than zero?
The equation is not quadratic
The equation has no real roots
The equation has two real roots
The equation has one real root
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the square root of 40 be simplified using square numbers?
4√5
5√8
6√6.67
2√10
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