Answers

2014-10-05T18:44:04+08:00
If you're using a calculator (the non-scientific one), chances are, it doesn't follow the PEMDAS rule. If you're using PEMDAS (Parenthesis, Exponent, Multiplication, Division, Addition, Subtraction) manually, I suggest you stick with that, unless you have a scientific calculator.
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2014-10-05T21:30:14+08:00
Because sometimes pemdas cant be apply in all equation
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