![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Order of Operations:
\To simplify the expression follow the order of operations: (PEMDAS)
\1. Evaluate the expressions inside the Parenthesis/Brackets (P).
\2. Evaluate Powers/Exponents (E).
\3. Multiply and/or Divide in order from left to right (MD).
\4. Add and/or Subtract in order from left to right (AS). \ \
\A simple technique for remembering the order of operations is turned into phrase "Please Excuse My Dear Aunty Sally"
\
The expression is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=32000b1c8338dc4b0233af7568a8c068.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=32bc140d1bc653b43b6f960ecd5b8a31.png\")
(Replace x with ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=74f3d3e4c40071d7ac71e61153308410.png\")
and y with 4)
Since there are no grouping symbols. First operation is evaluate powers.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=57815117303db168da4a33c7aa192472.png\")
(Evaluate powers: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e0f471d286d9c92ed8828c8f2f24a9da.png\")
)
Next operation is addition.
\= 20 (Add: 4 + 16 = 20)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The simplified expression is 20.