Unit Test — Unit test Answers

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Which expression is equivalent to 100 n2 − 1?

A
(10n)2 − (1)2
B
(10n2)2 − (1)2
C
(50n)2 − (1)2
D
(50n2)2 − (1)2
2
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Which polynomial can be simplified to a difference of squares?

A
10a2 + 3a – 3a – 16
B
16a2 – 4a + 4a – 1
C
25a2 + 6a – 6a + 36
D
24a2 – 9a + 9a + 4
3

What are the factors of x2 – 100?

A
(x – 50)(x + 50)
B
(x – 10)(x + 10)
C
(x – 25)(x + 4)
D
(x – 5)(x + 20)
6

What is the factorization of 121b4 − 49?

A
(11b − 7)(11b − 7)
B
(11b + 7)(11b − 7)
C
(11b2 − 7)(11b2 − 7)
D
(11b2 + 7)(11b2 − 7)

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