Finding the x values of a quadratic that has many different variables
135178
Finding a quadratic equation from roots (Vieta's formula)
73218
How to find centre,vertics,foci,focal radii,letus rectum... when exists of a general quadratic equation in x and y
28330
Finding x in $a^{x} \bmod  b = c$ when values a,b, and c are known?
489
How to take the gradient of the quadratic form?
111443
Optimization of $2x+3y+z$ under the constraint $x^2+ y^2+ z^2= 1$
105958
Solving a difference equation with several parameters
64754
Find $x$ in the equation $ax^3+bx^2+cx=d$
49909
Inequality with five variables
114146
Polynomial in $n$ variables
3390
finding the real values of $x$ such that : $x=\sqrt{2+\sqrt{2-\sqrt{2+x}}}$
122300
Maximizing a quadratic function subject to $\| x \|_2 \le 1$
26189
How to find out how many roots of a polynomial is in each quadrant?
139474
Solving system of Congruences with Two Variables (x and y)
79925
Infinitely many values of $x$ that satisfy the equations
20444
Derive quadratic formula
91871
Proving quadratic inequalities?
13353
How do I find the degree of a multivariable polynomial automatically?