AnswersFL-1200700-Mathematics for College Algebra MISSolving Quadratic Equations: Quadratic Formula

Solving Quadratic Equations: Quadratic Formula Answers

0 verified answers
1
Free Preview

What is the value of the discriminant of the quadratic equation −1 = 5x2 −2x, and what does its value mean about the number of real number solutions the equation has?

A
The discriminant is equal to −16, which means the equation has no real number solutions.
B
The discriminant is equal to −16, which means the equation has two real number solutions.
C
The discriminant is equal to 24, which means the equation has no real number solutions.
D
The discriminant is equal to 24, which means the equation has two real number solutions.
2
Free Preview

What is the discriminant of the quadratic equation 3 – 4x = –6x2?

A
–68
B
–56
C
76
D
88
3

What is the value of the discriminant of the quadratic equation -2x2=-8x+8, and what does its value mean about the number of real number solutions the equation has?

A
The discriminant is equal to 0, which means the equation has no real number solutions.
B
The discriminant is equal to 0, which means the equation has one real number solution.
C
The discriminant is equal to 128, which means the equation has no real number solutions.
D
The discriminant is equal to 128, which means the equation has two real number solutions.
4

What is the discriminant of the quadratic equation 0 = –x2 + 4x – 2?

A
–4
B
8
C
12
D
24
5

In simplest radical form, what are the solutions to the quadratic equation 6 = x2 – 10x?Quadratic formula: x =

Question illustration
A
x = 5
Option A
B
x = 5
Option B
C
x = 5
Option C
D
x = 5
Option D
6

Nathaniel is using the quadratic formula to solve 0 = x2 + 5x - 6. His steps are shown below.What are the solutions to the equation?

Question illustration
A
x = –1, 6
B
x = –6, 1
C
x = –22, 27
D
x = –27, 22
7

A quadratic equation of the form 0=ax2+bx+c has a discriminant value of -16. How many real number solutions does the equation have?

A
-1
B
0
C
1
D
2
8

What is the discriminant of the quadratic equation 0 = 2x2 + 3x – 5?

A
–37
B
–31
C
43
D
49
9

A quadratic equation has exactly one real number solution. Which is the value of its discriminant?

A
−1
B
0
C
1
D
2
10

Rhett is solving the quadratic equation 0= x2 – 2x – 3 using the quadratic formula. Which shows the correct substitution of the values a, b, and c into the quadratic formula?Quadratic formula: x =

Question illustration
A
StartFraction 2 plus or minus StartRoot (negative 2) squared minus 4(1)(negative 3) EndRoot Over 2(1) EndFraction
Option A
B
StartFraction negative 2 plus or minus StartRoot (negative 2) squared minus 4(1)(negative 3) EndRoot Over 2(1) EndFraction
Option B
C
StartFraction 2 plus or minus StartRoot negative 2 squared minus 4(1)(negative 3) EndRoot Over 2(1) EndFraction
Option C
D
StartFraction negative 2 plus or minus StartRoot negative 2 squared minus 4(1)(negative 3) EndRoot Over 2(1) EndFraction
Option D

Did you find these answers helpful?

More from this Course

Quiz
16 verified answers

Introduction to Modeling with Functions

Quiz
15 verified answers

Relative Frequencies and Association

Quiz
15 verified answers

Applications with Standard Normal Distribution