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Diophantine Equations
hard
0:00.0
Find the smallest
x
>
1
x > 1
x
>
1
for
x
2
−
7
y
2
=
1
x^2 - 7y^2 = 1
x
2
−
7
y
2
=
1
.
A
8
8
8
B
15
15
15
C
3
3
3
D
127
127
127
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