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(75887) About Me  (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 ?
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b cannot be 1 or 2 because "a" would not be an integer.
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The smallest value "b" can have is 3.
Then a^2-9 = 7
a^2 = 16
a = 4
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Cheers,
Stan H.
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A 3 b 4 c 5 d 6 e 7