Why does order matter when simplifying expressions? Does "PEMDAS" mean you need to multiply before dividing (since M comes before D) and that you need to add before subracting (since A comes before S)? Does "parentheses" really mean parentheses (and only parentheses)? Is there a time when I see parentheses when I do not deal with them first? How do you spell "parentheses?"
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Showing posts with label expressions. Show all posts
Saturday, December 13, 2008
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