AnswersAlgebra Concepts and ConnectionsSolving Quadratic Equations: Quadratic Formula

Solving Quadratic Equations: Quadratic Formula — Quiz Answers

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5

In simplest radical form, what are the solutions to the quadratic equation 6 is equal to x squared minus 10 x ? 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

A
x is equal to 5 plus or minus square root of 31
B
x is equal to 5 plus or minus square root of 19
C
x is equal to 5 plus or minus 2 square root of 19
D
x is equal to 5 plus or minus 2 square root of 31
6

What is the value of the discriminant of the quadratic equation negative 2 x squared is equal to negative 8 x plus 8 , and what does its value mean about the number of real number solutions the equation has?

A
The discriminant is equal to 128 , which means the equation has no real number solutions.
B
The discriminant is equal to 128 , which means the equation has two real number solutions.
C
The discriminant is equal to 0 , which means the equation has one real number solution.
D
The discriminant is equal to 0 , which means the equation has no real number solutions.
9

In simplest radical form, what are the solutions to the quadratic equation 0 is equal to negative 3 x squared minus 4 x plus 5 ? 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

A
x is equal to negative the fraction with numerator 2 plus or minus 2 square root of 19 and denominator 3
B
x is equal to negative the fraction with numerator 2 plus or minus square root of 19 and denominator 3
C
x is equal to the fraction with numerator 2 plus or minus square root of 19 and denominator 3
D
x is equal to the fraction with numerator 2 plus or minus 2 square root of 19 and denominator 3

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