How do I solve $C_x^0 + C_x^1 + \cdots + C_x^n = 2^n$
114277
Proving in Discrete Structures Problem that $2^N = \binom{N}{0} + \binom{N}{1} + \binom{N}{2} + \dots + \binom{N}{N}$
131941
Solve quadratic congruences.
133295
How to solve this set of symmetric polynomial expressions
66317
How to solve $z^3+z+1=0$?
40615
Solve for $x$ in the $80^\circ$-$80^\circ$-$20^\circ$ triangle
114889
Solve summation $\sum_{i=1}^n \lfloor e\cdot i \rfloor $
44296
Solving a cubic polynomial equation.
152342
$x_1+x_2+\cdots+x_n\leq M$: Cardinality of Solution Set is $C(M+n, n)$
48824
Prove: $ \frac{1}{\sin 2x} + \frac{1}{\sin 4x } + \cdots + \frac{1 }{\sin 2^n x} = \cot x - \cot 2^n x $
125057
How do I solve a problem with term $a^{n} + b^{n}$?
80817
Solving equations of the form $ae^x + bx +c =0$
116356
Combinatorial proof of $2 \cdot 3^0 + 2 \cdot 3^1 + 2 \cdot 3^2 + \cdots 2 \cdot 3^{n-1} = 3^n-1$
110955
Find the coefficient of $x^9$ in $(1+x)(1+x^2)(1+x^3)\cdots(1+x^{100})$
148570
Find the all possible real solutions of $x^y=y^x$
86900
Formula for the $1\cdot 2 + 2\cdot 3 + 3\cdot 4+\ldots + n\cdot (n+1)$ sum
107816
Solving a six-degree polynomial of the form $ax^6+bx^3+g$.
155659
Is there a formula for solving the congruence equation $ax^2 + bx + c=0$?