Remember, when writing a proof: e state what form of proof you will apply, e make clear how the form of proof you chose is set up for your problem, e show all key algebraic equations in a mathematics environment, that is, not written is a sentence but on a line of it's own. e use sentences to connect separate algebraic equations, concepts or statements, e do not use abbreviations or symbols in a sentence, e begin a sentence with a capitalised word, and e end a proof with a concluding statement that clearly states what was shown and by what method. Prove or disprove the following statement involving n,m Z If 7 is odd and m is odd then n + m? is even Use proof by contradiction to prove the theorem V'3 is irrational