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ALGEBRAIC OPERATIONS Here's a mnemonic sentence for the order or sequence in which operations are carried out in algebraic and numerical expressions: " Bless My Dear Aunt Sally! " (Brackets, Multiplications, Divisions, Additions, Subtractions) Thus (3*4+4/23)*5 is calculated in steps as: Those who use the term "parentheses" instead of "brackets" may prefer to "Please My Dear Old Sally". "Extra" brackets or parentheses may be written in for clarity (ie. [[3*4]+[4/2]2]*5 ), but computer programmers write only the pareddown versions of formulas wherever possible in order to save on computer calculation runtimes. Bruce Nerve of Manchester NH(USA) sent us an alternative (in Apr/00) that expands the mnemonic to include exponents (being quantities of power or indices, such as 3^{2}): " Please Excuse My Dear Aunt Sally! " (Parentheses, Exponents, Multiplications, Divisions, Additions, Subtractions) Incidentally the exponent sign E should not be confused with Euler's Constant sign e (used as the base of natural logarithms).

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