Solving a quadratic congruence $x^2-2x+4 \equiv 0 \pmod 9$
108187
When does $p^2$ divide $an^k + bp$?
9039
What is the best way to solve modular arithmetic equations such as $9x \equiv 33 \pmod{43}$?
8784
modulo version of the quadratic formula and Euler's criterion
62446
Solve the equation $x^2+\frac{9x^2}{(x+3)^2}=27$
115244
Integer solutions of $m^2+(m+1)^2=n^4+(n+1)^4$
69234
Solving Diophantine equation $1/x^2+1/y^2=1/z^2$
153647
Elementary number theory and quadratic
112390
Solutions of $x^2 \equiv 1 \pmod N$
7085
Prove that if the equation $x^{2} \equiv a\pmod{pq}$ has any solutions, then it has four solutions.
108035
solving diophantine equations using congruences
150446
Quadratic Modular Arithmetic
40892
How to solve a linear congruence $8n+9\equiv 0\pmod{\!1163}$
26478
Show that the congruence $x^{p-1} \equiv 1 \pmod {p^2}$ has precisely $p-1$ solutions modulo $p^2$
146753
Find $x$ such that $(x^2 + 4x + 3)^x + (2x + 4)^x = (x^2 + 4x + 5)^x$
92700
How can I solve $x^2 \equiv 19 \pmod {59}$.
18245
How to check if a system of congruence is solvable?
131395
Solving linear congruence $2x + 11 \equiv 7 \pmod 3$