UDPATE 2 (11/5): The proof of #10 had a typo.
Near the end, after the line “Subtracting 504 from both sides”, the right side should end with a “-504” rather than “+504”. Similarly, in the next line, the final parentheses should end with “-56” rather than “+56”.
UPDATE: The answer key has been added to the review sheet – let me know if you find an error!
Hi everyone,
Be aware, there was typo in problem number #9. The left side of the equation should end in “n(n+2)” instead of “n(n+1)”. Apologies for this error!
-Prof. Reitz
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