Timeline for Can it be defended that $\sqrt 4$ is both $2$ and $-2$ (and likewise for general square roots)?
Current License: CC BY-SA 4.0
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| when toggle format | what | by | license | comment | |
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| Nov 12, 2022 at 23:53 | comment | added | paul garrett | Yes, indeed. A very good insight into kids' thinking! :) | |
| Nov 9, 2022 at 13:55 | history | answered | johnnyb | CC BY-SA 4.0 |