Paradox - minus one equals one using square roots
3712
Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
2519
Finding double root. An easier way?
155285
difficulty of accepting $i^2 = -1$ for first timers
17963
I have learned that 1/0 is infinity, why isn't it minus infinity?
27802
How to show this equals 1 without "calculations"
144765
Solving $\sqrt{x+5} = x - 1$
53945
The square root of a prime number is irrational
61324
Finding the "square root" of a permutation
66364
Why is $(\sqrt{2}+\sqrt{3})^{2008}$ so close to an integer?
13363
Why does an argument similiar to 0.999...=1 show 999...=-1?
43834
Simple Complex Number Problem: $1 = -1$
53958
General misconception about $\sqrt x$
6721
math fallacy problem: $-1= (-1)^3 = (-1)^{6/2} = \sqrt{(-1)^6}= 1$?
54030
Square and square root and negative numbers
95057
Possible fake proof of $1= -1$
101162
Square root of $2$ is irrational
81875
why is $\sqrt{-1} = i$ and not $\pm i$?