Mathematics, 25.01.2020 10:31 alejandrosaaved1

The product of (a + b)(a − b) is a2 − b2. (1 point)

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sometimes

always

never

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question 21 pts
(07.07)

find the product of (x − 7)2. (1 point)

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x2 − 14x + 49

x2 + 14x + 49

x2 − 49

x2 + 49

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question 31 pts
(07.07)

find the product of (x + 5)2. (1 point)

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x2 − 10x + 25

x2 − 25

x2 + 25

x2 + 10x + 25

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question 41 pts
(07.07)

find the product of (x + 3)(x − 3). (1 point)

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x2 − 6x + 9

x2 + 6x + 9

x2 + 9

x2 − 9

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question 52 pts
(07.07)

find the product of (4x − 3y)2. (2 points)

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16x2 + 24xy + 9y2

16x2 − 9y2

16x2 − 24xy + 9y2

16x2 + 9y2

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question 62 pts
(07.07)

find the product of (2x + 5y)2. (2 points)

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4x2 + 20xy + 25y2

4x2 − 20xy + 25y2

4x2 − 25y2

4x2 + 25y2

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question 72 pts
(07.07)

find the product of (3x + 7y)(3x − 7y). (2 points)

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9x2 − 42xy + 49y2

9x2 + 42xy + 49y2

9x2 − 49y2

9x2 + 49y2

Answers: 1

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The product of (a + b)(a − b) is a2 − b2. (1 point)

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