Solving $2x^4+2x^2y^2+y^4 = z^2$
55206
Prove that the equation $x^4+(2k^2)x^2+2k^4$ is not a perfect square
50772
Solving a Linear Diophantine Equation
85917
Solve $(x+1)^y-x^z=1$
71482
Solve $p_4(x) = x^4 −(2m + 4)x^2 + (m−2)^2 $such that $p_4$ is a product of two non-constant integer-coeficient polynomials
82083
Solving $(z+1)^5 = z^5$
41383
Prove that $(x+y+z)^2(yz+zx+xy)^2 \leq 3(y^2+yz+z^2)(z^2+zx+x^2)(x^2+xy+y^2)$
40875
Particular solution of $y''-4y'+5y = 4e^{2x} (\sin x)$
133680
On the equation $3x^3 + 4y^3 + 5z^3 = 0$
154216
Solve $\sin(z) = z$ in complex numbers
101299
Solving the complex polynomial
31317
If we know $x+y+z=1$, $x^2+y^2+z^2=2$, and $x^3+y^3+z^3=3$, how to find $x^4+y^4+z^4$?
47809
If $x,y\in\mathbb Z$, solve $x^2+xy+y^2=x^2y^2$.
149254
Solving $y^3=x^3+8x^2-6x+8$
68164
$(2x^2+3y^2-7)xdx-(3x^2+2y^2-8)ydy=0$
150085
Solutions to the diophantine equation: $2a^2 + 2b^2- c^2- d^2 = 0$
71756
diophantine equation: $x^2 +y^2 = z^n$
158004
A formula for $1^4+2^4+...+n^4$