query: What did I do wrong? 1 = √1 = √(-1)(-1) = √(-1) √(-1) = i.i = i² = -1
positive_passages.docid: 3712
positive_passages.text: Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
negative_passages.docid: 124581
negative_passages.text: Solving $x^2 - 1 = e^x$
negative_passages.docid: 105080
negative_passages.text: Why are minus signs not working in this equation?
negative_passages.docid: 34430
negative_passages.text: Why does $(\frac{p-1}{2}!)^2 = (-1)^{\frac{p+1}{2}}$ mod $p$?
negative_passages.docid: 80004
negative_passages.text: Why is $1/i$ equal to $-i$?
negative_passages.docid: 154945
negative_passages.text: $|px^2+qx+r|\le1$ for all $x$ in $[-1; 1]$, show that $|rx^2+qx+p|\le2$ for all $x$ in $[-1; 1]$
negative_passages.docid: 101169
negative_passages.text: Prove that $x^2 = - 1$ has no solution in $\mathbb{Z}$
negative_passages.docid: 113386
negative_passages.text: Find all integer roots of: $x^2(y-1)+y^2(x-1)=1$
negative_passages.docid: 81875
negative_passages.text: why is $\sqrt{-1} = i$ and not $\pm i$?
negative_passages.docid: 96328
negative_passages.text: Proving $e^{i\pi} = -1$ without proving $e^{ix} = \cos x + i\sin x$
negative_passages.docid: 97952
negative_passages.text: Square root of 1 is (not) -1
negative_passages.docid: 54030
negative_passages.text: Square and square root and negative numbers
negative_passages.docid: 69172
negative_passages.text: $y'=$ ${-x+\sqrt{(x^2+4y)}}\over 2$ , $y(2)=-1$
negative_passages.docid: 43453
negative_passages.text: Is ${\sqrt2^{\sqrt2^{\sqrt2^{\sqrt2^\sqrt2}}}}^{...}=4$ correct?
negative_passages.docid: 155285
negative_passages.text: difficulty of accepting $i^2 = -1$ for first timers
negative_passages.docid: 67923
negative_passages.text: "num - 1" vs "num -= 1"
negative_passages.docid: 74122
negative_passages.text: $ 2.28319 = 0 $ !? - How do I spot the mistake?