Final answer:
To negate 'my report was well written, or my report did not get an A', De Morgan's laws transform it into 'my report was not well written and my report did get an A'.
Step-by-step explanation:
To use De Morgan's laws to write the negation of the statement 'my report was well written, or my report did not get an A', you need to negate each part of the statement and change the 'or' to 'and' (or vice versa). According to De Morgan's laws, the negation of P or Q is not P and not Q. Thus, the negation of the original statement is 'my report was not well written and my report did get an A'.