Unit Test Answers

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What are the solutions to the equation (x – 2)(x + 5) = 0?

x = –2, –5

x = –2, 5

x = 2, –5

x = 2, 5

Next, factor the trinomial completely. The equation becomes .

0 = (4x + 10)(x – 3)

0 = 2(2x – 5)(x + 3)

0 = 4(x – 5)(x + 6)

The roots of the function are .

–6 and 5

–3, 0, and 5/2

–3 and 5/2

–5/2 and 3

What values of x make the equation x2 + 9x – 22 = 0 true? Check all that apply.–11–20211

–11

–2

Factor out the GCF of .

The ball will hit the ground after seconds.

Answer:

The graph of a quadratic function touches, but does not cross, the x-axis at x = 4. Which function represents this situation?

y = x2 – 16

y = x2 – 4x

y = x2 – 8x + 16

y = x2 + 8x + 16

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