KATANANIGHTIN KATANANIGHTIN Math Answered 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)