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What is the product of the radical expression. (7-2square root) (8+2 square root)

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?