# SOLUTION: If a and b are positive integers and a^2-b^2 = 7 what is the value of a ? A 3 b 4 c 5 d 6 e 7

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 Question 304539: If a and b are positive integers and a^2-b^2 = 7 what is the value of a ? A 3 b 4 c 5 d 6 e 7 Answer by stanbon(57967)   (Show Source): You can put this solution on YOUR website! If a and b are positive integers and a^2-b^2 = 7 what is the value of a ? ------------------ b cannot be 1 or 2 because "a" would not be an integer. ---------------------------- The smallest value "b" can have is 3. Then a^2-9 = 7 a^2 = 16 a = 4 ----------------- Cheers, Stan H. ================= A 3 b 4 c 5 d 6 e 7