is there a mathematical equation for 2 + 2^2 + 2^3 + 2^4 + 2^5 ...
33082
Proving $\sum_{i=0}^n 2^i=2^{n+1}-1$ by induction.
105226
How to solve this equation manually: $(x^2+100)^2=(x^3-100)^3$?
84335
Solving for $\sum_{n = 1}^{\infty} \frac{n^3}{8^n}$?
50050
A formula for the power sums: $1^n+2^n+\dotsc +k^n=\,$?
19073
Is there a general formula for solving 4th degree equations (quartic)?
46668
How to find integer solutions to $M^2=5N^2+2N+1$?
54212
Another polynomial equation
113230
How can we factor $ q^4 + q^2 + 1$
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Sum of the form $r+r^2+r^4+\dots+r^{2^k} = \sum_{i=1}^k r^{2^i}$
133680
On the equation $3x^3 + 4y^3 + 5z^3 = 0$
69858
Congruence Equation $3n^3+12n^2+13n+2\equiv0,\pmod{2\times3\times5}$
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Is there a closed form expression for $1 + x + x^{4} + x^{9}+x^{16}+x^{25} +..+x^{k^2}$?
8276
How do I get my equation to have the form $(x-a)^2 + (y-b)^2 + (z-c)^2-d = 0$?
94700
Integer solutions for $x^3+2=y^2$?
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$2 + 2 = 5$ (Fake proof, or ?)
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How to determine equation for $\sum_{k=1}^n k^3$
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Solving $|x-2| + |x-5|=3$