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PEN H Problems
48
48
Part of
PEN H Problems
Problems
(1)
H 48
Source:
5/25/2007
Solve the equation
x
2
+
7
=
2
n
x^2 +7=2^n
x
2
+
7
=
2
n
in integers.
modular arithmetic
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Diophantine Equations
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