![\"\"](\"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=0ed0ee80ef6d4cb16489e1ab330f07f7.png\")
.
Substitute x = 6,and z = 12 in the expression.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ecb6789832683e32af2ced77e560b7ef.png\")
(Substitute x = 6,and z =12)
Simplify the expression using order of operations (PEMDAS).
\Since there are no grouping symbols, first operation is
\evaluate powers.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a31207a8ff3bf17ae11b4941f8db58c7.png\")
(Evaluate powers: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c84a6d70f658d8198793d1085cc383f6.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Next operation is addition.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2197e6ad3c7d3eb547aa0f4bfdc7c429.png\")
(Add: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fb6e057e875db309a70639e3619585de.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The value of the expression is 180.