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Am 23.01.2025 um 00:58 schrieb sobriquet:
> Op 22/01/2025 om 14:48 schreef Richard Hachel:
>> x²+4x+5=0
>>
>> This equation has no root, and it never will.
>>
>> We can then find two roots of its mirror curve.
>>
>> Let x'=-3 and x"=-1
>>
>> These are not roots of this curve, but the roots of the imaginary 
>> mirror curve.
>>
>> What is this imaginary mirror curve?
>>
>> It is the curve with equation y=-x²-4x-3
>>
>> Let's look for its roots, and we find x'=-3 and x'=-1
>>
>> These are the imaginary roots of x²-4x+5.
>>
>> Or x'=-3(i) and x'=-1(i)
>>
>> R.H.
> 
> Wolfram Alpha tells us there are two roots:
> 
> https://www.wolframalpha.com/input?i=solve+x%5E2%2B4x%2B5%3D0

Wolfram Alpha must be wrong! :-P

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