This is a classical mathematical fallacies. At hindsight, everything looks perfectly fine.
The mistake is in line 5. This is quite similar to the one we discussed previously.
We took the square-root on both sides, but fail to account for
!
This is a classical mathematical fallacies. At hindsight, everything looks perfectly fine.
The mistake is in line 5. This is quite similar to the one we discussed previously.
We took the square-root on both sides, but fail to account for
!
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