Simplifying Polynomial Expressions — Unit test

Question 1

Which polynomial is in standard form?

Revolt · Accepted Answer

mc026-3.jpg

Question 2

Which expression is equivalent to 4 – (2m – 3)?

Revolt · Accepted Answer

4 – 2m + 3

Question 3

The area of a rectangle is (x3 – 5x2 + 3x – 15), and the width of the rectangle is (x2 + 3). If area = length × width, what is the length of the rectangle?

Revolt · Accepted Answer

x – 5

Question 4

Subtract 15mn – 22m +2n from 14mn – 12m +7n.

Revolt · Accepted Answer

–mn + 10m + 5n

Question 5

A student factors 15c2 + c – 28 to the following. (c + 2)(15c – 14) Which statement about (c + 2)(15c – 14) is true?

Revolt · Accepted Answer

The expression is not equivalent, but it is completely factored.

Question 6

Holly finds that (11m – 13n + 6mn) – (10m – 7n + 3mn) = m – 20n + 9mn. What error did Holly make?

Revolt · Accepted Answer

She only used the additive inverse of 10m when combining like terms.

Question 7

The length of a rectangular field is represented by the expression . The width of the field is represented by the expression . How much greater is the length of the field than the width?

Revolt · Accepted Answer

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Question 8

What is the correct order of operations for simplifying the expression ?

Revolt · Accepted Answer

square the binomial (x + 3), distribute the negative to the binomial (x2 + 9), simplify the dividend, and then divide

Question 9

Parker simplified the expression as shown below. Which statement best describes Parker’s error?

Revolt · Accepted Answer

He distributed –5 incorrectly.

Question 10

Which expression is equivalent to 9x – (x – 8)(x + 1) + 10x?

Revolt · Accepted Answer

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Simplifying Polynomial Expressions — Unit test Answers

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