Factoring Polynomials: Difference of Squares Answers

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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)
2
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Which expressions are equivalent to 25x4 −64? Select three options.

A
25x4 + 40x − 40x − 64
B
25x4 + 13x − 13x − 64
C
(5x2 + 8)(5x2 − 8)
D
(x2 + 13)(x2 – 13)
E
(5x2 – 8)2
3

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
4

The area of a square can be represented by the expression x10. Which monomial represents a side of the square?

A
x2
B
x5
C
x20
D
x100
5

Which term is a perfect square of the root 3x4?

A
6x8
B
6x16
C
9x8
D
9x16
6

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)
7

What is the square root of m6?

A
m2
B
m3
C
m4
D
m5
8

Which expression is equivalent to 36x2 − 25?

A
(18x)2 + (−5)2
B
(18x)2 − (5)2
C
(6x)2 + (−5)2
D
(6x)2 − (5)2
9

What is the factorization of 49b2 − 81?

A
(7b – 9)(7b – 9)
B
(7b – 9)(7b + 9)
C
(7b2 – 9)(7b2 – 9)
D
(7b2 – 9)(7b2 + 9)
10

What is a difference of squares that has a factor of x+8?

A
x2−4
B
x2−16
C
x2−64
D
x2−256

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