AnswersOC27 MATH COLL ALGEBRA-1200710-S1-Degele-VOL7006PUnit Test

Multiplying Monomials and Binomials Answers

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1
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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)
2
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The product is k2 – k + .

A
9
B
18
C
81
3

The product is k2 – k + .

A
9
B
18
C
81
4

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)
5

What is the product of x(x + 1)?

A
2x + x
B
x2 + 2x
C
2x2 + x
D
x2 + x
6

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.

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