Determine the product of each sum and difference of two terms. Write your on your answer sheet.
1. (x + 1)(x - 1)
2. (x + 4)(x-4)
3. (x + 3)(x - 3)
4. (x + 7)(x - 73
5. (x + 9)(x-9)
1. (x + 1)(x - 1)
2. (x + 4)(x-4)
3. (x + 3)(x - 3)
4. (x + 7)(x - 73
5. (x + 9)(x-9)
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Answer:
1. x² - 1
2. x² - 16
3. x² - 9
4. x² - 49
5. x² - 81