![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The expression is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2db9b003ad41301d85d5a724dba06429.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a622475733b62bc5436cb2d5026877c1.png\")
(Substitute 4 for x and -3 for y)
\
To simplify the expression follow the order of operations: (PEMDAS)
\ \1. Evaluate the expressions inside Brackets/Parenthesis (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 pf operations is turned into phrase
\“Please Excuse My Dear Aunty Sally”![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
In the given expression there are no grouping symbols.
First operation is evaluating power.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=17967cbf2f5b4f44bdf353e578a9f675.png\")
(Evaluate power: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=efbb81bb9b0426f9b90d420b5ef69740.png\")
)
Next operation is multiplication.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4af9d3b54ba93025066043483594d9dd.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d342e5904bfe60de41e76f548fad0ed0.png\")
)
Next operation is subtraction.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8f608c62d7813f9ddb4a4b25695a0655.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c14e2f9910c87525a62821e837dea66e.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The value of the expression is 49.