Pretest

Question 1

Which shows the correct substitution of the values A , b , and c from the equation 1 is equal to negative 2 x plus 3 x squared plus 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 2

What is the value of the discriminant for the quadratic equation 0 is equal to 2 x squared plus x minus 3 ? Discriminant is equal to b squared minus 4 A c

Revolt · Accepted Answer

25

Question 3

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

Revolt · Accepted Answer

negative 7

Question 4

Determine the discriminant for the quadratic equation negative 3 is equal to x squared plus 4 x plus 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 5

Determine the discriminant for the quadratic equation 0 is equal to negative 2 x squared plus 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 6

Which shows the correct substitution of the values A , b , and c from the equation 0 is equal to negative 3 x squared minus 2 x plus 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

Question 7

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

Revolt · Accepted Answer

Image with description On a coordinate plane, a parabola opens up. It goes through (negative 2, 3), has a vertex at (0, negative 1), and goes through (2, 3).

Question 8

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 9

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 10

What is the value of the discriminant for the quadratic equation negative 3 is equal to negative x squared plus 2 x ? Discriminant is equal to b squared minus 4 A c

Revolt · Accepted Answer

16

Pretest Answers

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