Answers FL-1200700-Mathematics for College Algebra MISSolving Quadratic Equations: Quadratic Formula

Solving Quadratic Equations: Quadratic Formula — Test Answers

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What is the value of i 20+1?

–1

–i

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The function g(x) is defined as g(x) = 6x2 + 23x – 4. When does g(x) = 0?

x = –6 or x =

x = –4 or x =

x = or x = 6

x = or x = 4

What is the value of i 97 – i?

–i

–2i

i Superscript 96

Fiona is completing the square to solve the polynomial equation.x2 – 4x + 1 = 0

isolating the constant 1

adding 4 to both sides of the equation

isolating the second term, –4x

adding 1 to both sides of the equation

Solve x2 + 6x = 7 by completing the square. Which is the solution set of the equation?

{–7, 1}

(negative 3 minus StartRoot 10 EndRoot comma negative 3 + StartRoot 10 EndRoot)

(3 minus StartRoot 10 EndRoot comma negative 3 + StartRoot 10 EndRoot)

{1, 7}

A quadratic equation of the form 0 = ax2 + bx + c has one real number solution. Which could be the equation?

0 = 2x2 – 4x + 1

0 = 2x2 – 5x + 3

0 = –2x2 – 4x – 2

0 = –2x2 – 3x – 1

Solve x2 – 8x = 20 by completing the square. Which is the solution set of the equation?

{–22, 14}

{–14, 22}

{–10, 2}

{–2, 10}

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = –6. Which function could Heather be writing?

f(x) = x2 + 36x + 12

f(x) = x2 – 36x – 12

f(x) = –x2 + 12x + 36

f(x) = –x2 – 12x – 36

A quadratic equation has zero real number solutions. Which could be the discriminant value associated with this equation?

–5

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Solving Quadratic Equations: Quadratic Formula — Test Answers

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