How would i start to solve this problem?(adsbygoogle = window.adsbygoogle || []).push({});

x^2 + 1 == 0 (mod 5^3).

Find all solutions.

How do i know how many solutions there are? If i reduce it to

x^2 + 1 == 0 (mod 5), i get that x= 2,3,7,8,12, etc.

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# X^2 + 1 = 0 (mod 5^3).

**Physics Forums - The Fusion of Science and Community**