![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The sentence is twice a number decreased by the cube of the same number.
\Let n be the number
\The word “twice” indicates multiplication by 2. So, twice a number is 2n
\The word “decreased” indicates subtraction and the symbol is “![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7a8c800d2df7d176b09fff75181eb8f.png\")
”.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Rewrite the sentence into expression as, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b71084633bcb12947a976771e86ceab2.png\")
= ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9026243c07ed60140159e4c2ca31c4bf.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The algebraic expression is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9026243c07ed60140159e4c2ca31c4bf.png\")
.