
Exploring the Quadratic Formula and Discriminant

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

Jackson Turner
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the solutions to the equation x^2 - 7x + 6 = 0 when solved by factoring?
x = 7 and x = 1
x = 6 and x = -1
x = 7 and x = -6
x = 1 and x = 6
Tags
CCSS.HSA-REI.B.4B
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the x-intercepts of the quadratic function x^2 - 7x + 6?
(7, 0) and (-6, 0)
(6, 0) and (1, 0)
(7, 0) and (1, 0)
(6, 0) and (-1, 0)
Tags
CCSS.HSF-IF.C.7A
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the quadratic formula used to solve quadratic equations?
x = -b ± √(b^2 - 4ac) / a
x = -b ± √(b^2 - 4ac) / 2a
x = b ± √(b^2 - 4ac) / 2a
x = -b ± √(b^2 + 4ac) / 2a
Tags
CCSS.HSA-REI.B.4B
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the quadratic formula, what do the letters a, b, and c represent?
a is the constant, b is the coefficient of x, and c is the coefficient of x^2
a is the coefficient of x^2, b is the coefficient of x, and c is the constant
a is the coefficient of x, b is the constant, and c is the coefficient of x^2
a is the coefficient of x^2, b is the constant, and c is the coefficient of x
Tags
CCSS.HSA-REI.B.4B
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the solutions to the equation x^2 + 5x + 1 = 0 using the quadratic formula?
x = -5 ± √21 / 2
x = -5 ± √21 / 1
x = -5 ± √17 / 2
x = -5 ± √25 / 2
Tags
CCSS.HSA-REI.B.4B
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does it mean if the discriminant of a quadratic equation is negative?
The solutions are rational
There are no real solutions
There is one real solution
There are two real solutions
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the discriminant of the quadratic equation x^2 - 4x - 5 = 0?
16
9
36
25
Tags
CCSS.HSA-REI.B.4B
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