Where is the error in this "proof" that 3=0?
126261
Extraneous solution from substituting in equations
96805
Why is the Absolute Value of $3-π$ equal to $π - 3$
56624
Prove that $0!+1! + 2! + 3! + ..... + n!$ $\neq$ $p^\text{r}$, where $n \geqslant 3$ and $n$, $p$ and $r$ are three integers
40048
Finding the fallacy in this broken proof
36503
Nicomachus theorem proof - what did I do wrong?
135807
I'm having trouble with a proof by induction
148343
The sum of the elements in a field of at least three elements is 0
119937
Why does (0 < 5 < 3) return true?
133680
On the equation $3x^3 + 4y^3 + 5z^3 = 0$
140086
Does $3-4+1$ equal $0$ or $-2$.. or maybe $2$?
108923
What is wrong with this false proof? $-1=(-1)^1=(-1)^\frac{2}{2}=((-1)^2)^\frac{1}{2}=\sqrt{(-1)^2}=\sqrt{1}=1$
57981
Alternative proof of $a\times0= 0$
113119
Use the division algorithm to prove that 3|(n³ + 2n) for all n ∈ ℕ
75387
A proof that $1=2$. May I know why it’s false?
1002
Where is the flaw in this "proof" that 1=2? (Derivative of repeated addition)
100399
A doubt with a part of a certain proof.
75092
Initial value problem $x'=x^{2/3}$