Answers FL-1200310-Algebra 1 Sem 2Multiplying Polynomials and Simplifying Expressions

Multiplying Polynomials and Simplifying Expressions — Unit test Answers

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The first three steps in determining the solution set of the system of equations algebraically are shown in the table.y = −x2 +2x − 9 y = −6x + 6

(5, −24) and (3, −12)

(5, 36) and (3, 24)

(−5, −24) and (−3, 12)

(−5, 36) and (−3, 24)

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What is a solution to (x + 6)(x + 2) = 60?

x = −6

x = −4

x = 4

x = 12

Which steps could be part of the process in algebraically solving the system of equations, y + 5x = x2 + 10 and y = 4x – 10? Select two options.

y = x2 + 5x + 10

y + 5x = x2 + 10 + 4x – 10

0 = x2 – 9x

0 = x2 – 9x + 20

One x-value of a solution to the system is 4.

Which statement describes the graph of this polynomial function?

The graph crosses the x-axis at x = 2 and x = –1 and touches the x-axis at x = 0.

The graph touches the x-axis at x = 2 and x = –1 and crosses the x-axis at x = 0.

The graph crosses the x-axis at x = –2 and x = 1 and touches the x-axis at x = 0.

The graph touches the x-axis at x = –2 and x = 1 and crosses the x-axis at x = 0.

Which expression is equivalent to (4 + 6i)2?

–20 + 48i

8 + 12i

16 – 36i

20 + 48i

Which equation represents a graph with a vertex at (1, –6)?

y = 3x2 + 6x – 3

y = 3x2 – 6x – 3

y = 3x2 – 8x – 1

y = 3x2 – 3x – 6

Two sandboxes with the same area are shown.The equation represents the area of Sandbox 2 in terms of its width.

2.72 meters

3.06 meters

9.16 meters

10.18 meters

The product of two consecutive integers is 272. Which quadratic equation can be used to find x, the smaller number?

x2 + 1 = 272

x2 − 1 = 272

x2 + x − 272 = 0

x2 + x + 272 = 0

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Multiplying Polynomials and Simplifying Expressions — Unit test Answers

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