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

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?