AnswersCommon Core Algebra I B-ICIntroduction to Polynomials

Introduction to Polynomials Answers

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1
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c3 + c2

A
–3
B
–2
C
2
D
3
2
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c3 + c2

A
–4
B
–2
C
2
D
4
3

Multiply: (5t – 4)(4t + 5)What is the product?

A
20t2 + 9t – 20
B
20t2 + 18t – 19
C
20t2 + 25t – 36
D
20t2 + 41t – 20
4

Is the student’s work correct?

A
No, she did not multiply –6y2 by 2 correctly.
B
No, she did not add 3y2 and –12y2 correctly.
C
No, she did not use the distributive property correctly.
D
Yes, she multiplied the binomials correctly.
5

Which products result in a difference of squares? Check all that apply.(5z + 3)(–5z – 3)(w – 2.5)(w + 2.5)(8g + 1)(8g + 1)(–4v – 9)(–4v + 9)(6y + 7)(7y – 6)(p – 5)(p – 5)

A
(5z + 3)(–5z – 3)
B
(w – 2.5)(w + 2.5)
C
(8g + 1)(8g + 1)
D
(–4v – 9)(–4v + 9)
E
(6y + 7)(7y – 6)
F
(p – 5)(p – 5)
6

The product (k – 9)2 can also be written as .

A
(k – 9)(k + 9)
B
(k – 9)(k – 9)
C
(k + 9)(k + 9)
7

The product is k2 – k + .

A
9
B
18
C
81
8

The product is k2 – k + .

A
9
B
18
C
81

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