Solving Quadratic Equations: Quadratic Formula

Question 1

Determine which functions have two real number zeros by calculating the discriminant, b2 – 4ac. Check all that apply.f(x) = x2 + 6x + 8g(x) = x2 + 4x + 8h(x) = x2 – 12x + 32k(x) = x2 + 4x – 1 p(x) = 5x2 + 5x + 4t(x) = x2 – 2x – 15

Revolt · Accepted Answer

f(x) = x2 + 6x + 8; h(x) = x2 – 12x + 32; k(x) = x2 + 4x – 1; t(x) = x2 – 2x – 15

Question 2

✔ –3–11 5

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–3

Question 3

✔ 012

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0

Question 4

Haley substituted the values of a, b, and c into the quadratic formula below. x = What was Haley’s function in standard form? f(x) = x2 + x +

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Part 1: 7; Part 2: -10; Part 3: -2

Question 5

What are the values of x in the equation 4x2 + 4x – 3 = 0?

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x = –1.5, 0.5

Question 6

Where does f(x) = 3x2 – 11x – 4 intersect the x-axis? The negative x-intercept is at ( , 0). The positive x-intercept is at ( , 0).

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Part 1: -1/3; Part 2: 4

Question 7

–10✔ 12

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1; Selection 1: 1; Selection 2: –1; Selection 3: 1; Selection 4: –3; Selection 5: 0

Question 8

✔ –1012

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–1

Question 9

–10✔ 12

Revolt · Accepted Answer

1

Solving Quadratic Equations: Quadratic Formula Answers

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