The error that Eli made is that C. He did not solve the equation completely since there are two positive solutions.
It should be noted that the equation given is g² = 49.
In this case, Eli solved it and got -7. This is incorrect.
It should be noted that the appropriate solution should have been ✓49 = 7.
Therefore, the error that Eli made is that C. He did not solve the equation completely since there are two positive solutions.
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