Identity of rational polynomial over $\mathbb{C}$.
53038
Show that $\frac{P(z)}{Q(z)} = \sum_{k=1}^{n}\frac{P(\alpha_k)}{Q'(\alpha_k)(z-\alpha_k)}$
65661
Decomposition of a homogeneous polynomial
81921
If $f(x + y) = f(x) + f(y)$ showing that $f(cx) = cf(x)$ holds for rational $c$
158063
A formula for the roots of a solvable polynomial
42265
A proof that $\displaystyle\sum_{i=1}^{n}P''(r_i)/P'(r_i)=0$ for a degree $n$ polynomial
48977
Polynomials having as roots the sum (respectively, the product) of two algebraic elements
117743
Remainder of the polynomial
52528
Showing that minimal polynomial has the same irreducible factors as characteristic polynomial
148310
Showing rational numbers are algebraic
152347
Proof that a certain entire function is a polynomial
145039
Algebraic independence over $\overline{\mathbb Q}$ and over $\mathbb Q$
152297
Understanding quotients of $\mathbb{Q}[x]$
14836
A polynomial sequence
143321
Number of roots of a polynomial over a finite field
13981
Proof that every polynomial of odd degree has one real root
4885
Polynomials with integer coefficients such that $p(a)=b,p(b)=c,p(c)=a$
33011
Prove that the polynomial $f_n(x)=nx^{n+1}-(n+1)x^n+1$ is divisible by $(x-1)^2$