Introduction to the Quadratic Formula — Quiz

Question 1

What are the values of A , b , and c in the quadratic equation 0 is equal to 1 half x squared minus 3 x minus 2 ?

Revolt · Accepted Answer

A is equal to 1 half , b is equal to negative 3 , c is equal to negative 2

Question 2

Determine the discriminant for the quadratic equation 0=−2⁢x2+3. Based on the discriminant value, how many real number solutions does the equation have? Discriminant is equal to b squared minus 4 A c

Revolt · Accepted Answer

2

Question 3

What are the values of A , b , and c in the quadratic equation negative 2 x squared plus 4 x minus 3 is equal to 0 ?

Revolt · Accepted Answer

A is equal to negative 2 , b is equal to 4 , c is equal to negative 3

Question 4

Which is the graph of a quadratic equation that has a positive discriminant?

Revolt · Accepted Answer

Image with description A coordinate plane displays the x-axis labeled from negative 5 to 5 in increments of 1 and the y-axis labeled from negative 5 to 5 in increments of 1. An upward-opening parabola has a vertex at the point 0 comma negative 1. It passes through approximately the points negative 1 comma 0 and 1 comma 0, then continues upward through approximately negative 2 comma 3 and 2 comma 3.

Question 5

Which shows the correct substitution of the values a, b, and c from the equation 1=−2⁢x+3⁢x2+1 into the quadratic formula? Quadratic formula: x is equal to the fraction with numerator negative b plus or minus square root of b squared minus 4 A c end root and denominator 2 A

Revolt · Accepted Answer

x is equal to the fraction with numerator negative negative 2 plus or minus square root of negative 2 squared minus 4 3 0 end root and denominator 2 times 3

Question 6

What is the value of the discriminant for the quadratic equation 0=x+2+x2? Discriminant is equal to b squared minus 4 A c

Revolt · Accepted Answer

negative 7

Question 7

What is the value of the discriminant for the quadratic equation −3=−x2+2⁢x? Discriminant is equal to b squared minus 4 A c

Revolt · Accepted Answer

16

Question 8

What is the value of the discriminant for the quadratic equation 0=2⁢x2+x−3? Discriminant is equal to b squared minus 4 A c

Revolt · Accepted Answer

25

Question 9

Determine the discriminant for the quadratic equation −3=x2+4⁢x+1. Based on the discriminant value, how many real number solutions does the equation have? Discriminant is equal to b squared minus 4 A c

Revolt · Accepted Answer

1

Question 10

Which shows the correct substitution of the values a, b, and c from the equation 0=−3⁢x2−2⁢x+6 into the quadratic formula? Quadratic formula: x is equal to the fraction with numerator negative b plus or minus square root of b squared minus 4 A c end root and denominator 2 A

Revolt · Accepted Answer

x is equal to the fraction with numerator negative negative 2 plus or minus square root of negative 2 squared minus 4 negative 3 6 end root and denominator 2 times negative 3

Introduction to the Quadratic Formula — Quiz Answers

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