AnswersTX-Algebra II AUnit Test

Addition and Subtraction of Polynomials Answers

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1
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Which expression can be used to find the difference of the polynomials?(10m – 6) – (7m – 4)

A
[10m + (–7m)] + [(–6) + 4]
B
(10m + 7m) + [(–6) + (–4)]
C
[(–10m) + (–7m)] + (6 + 4)
D
[10m + (–7m)] + [6 + (–4)]
2
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Lucia finds that . What error did Lucia make?

Question illustration
A
She found the difference instead of the sum.
B
She combined the terms 3x2 and 7x2 incorrectly.
C
She combined the terms 3x and –9x incorrectly.
D
She did not combine all like terms.
3

Which expression shows the sum of the polynomials with like terms grouped together?

Question illustration
A
mc005-2.jpg
Option A
B
mc005-3.jpg
Option B
C
mc005-4.jpg
Option C
D
mc005-5.jpg
Option D
4

What is the sum of the polynomials?(m + n + 3) + (m + n + 4)

A
–1
B
mc015-1.jpg
Option B
C
2m + 2n + 7
D
mc015-2.jpg
Option D
5

What is the additive inverse of the polynomial?

Question illustration
A
mc007-2.jpg
Option A
B
mc007-3.jpg
Option B
C
mc007-4.jpg
Option C
D
mc007-5.jpg
Option D
6

What is the sum of the polynomials?

Question illustration
A
mc010-2.jpg
Option A
B
mc010-3.jpg
Option B
C
mc010-4.jpg
Option C
D
mc010-5.jpg
Option D
7

What is the difference of the polynomials?

Question illustration
A
mn – 11
B
mn + 3
C
mc016-2.jpg
Option C
D
mc016-3.jpg
Option D
8

What is the missing polynomial? – (20 – 4x – 5x2) = 20 – 7x2

Question illustration
A
mc024-2.jpg
Option A
B
mc024-3.jpg
Option B
C
mc024-4.jpg
Option C
D
mc024-5.jpg
Option D
9

Marcus finds that . What error did Marcus make?

Question illustration
A
He combined the terms 5x and –7x incorrectly.
B
He combined the terms 3x2 and 4x2 incorrectly.
C
He combined the terms –2y2 and 12y2 incorrectly.
D
He subtracted the polynomials instead of adding.
10

What is the sum of the polynomials?

Question illustration
A
mc017-2.jpg
Option A
B
mc017-3.jpg
Option B
C
9x + 4
D
mc017-4.jpg
Option D
11

Which expression can be used to find the difference of the polynomials?(4m – 5) – (6m – 7 + 2n)

A
(4m – 5) + (6m + 7 + 2n)
B
(4m – 5) + (–6m + 7 + 2n)
C
(4m – 5) + (–6m – 7 – 2n)
D
(4m – 5) + (–6m + 7 – 2n)
12

What is the sum of the polynomials?

Question illustration
A
mc009-2.jpg
Option A
B
mc009-3.jpg
Option B
C
mc009-4.jpg
Option C
D
mc009-5.jpg
Option D
13

Samuel found the difference of the polynomials. = What value is missing from his solution?

Question illustration
A
8
B
9
C
21
D
22
14

What is the difference of the polynomials?

Question illustration
A
mc018-2.jpg
Option A
B
mc018-3.jpg
Option B
C
mc018-4.jpg
Option C
D
mc018-5.jpg
Option D
15

What is the sum of the polynomials?

Question illustration
A
4m + 3
B
4m – 24n + 3
C
30m – 5
D
30m – 24n – 5

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