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2013 Saudi Arabia Pre-TST
4.2
4.2
Part of
2013 Saudi Arabia Pre-TST
Problems
(1)
if 2013 divides $x^{1433} + y^{1433} then divides also x^7 + y^7
Source: 2013 Saudi Arabia Pre-TST 4.2
9/13/2020
Let
x
,
y
x, y
x
,
y
be two integers. Prove that if
2013
2013
2013
divides
x
1433
+
y
1433
x^{1433} + y^{1433}
x
1433
+
y
1433
then
2013
2013
2013
divides
x
7
+
y
7
x^7 + y^7
x
7
+
y
7
.
number theory
divides
divisible