The expression is .
(Substitute: a = 48 and b = 12) \ \
(Subtract: )
(Write )
(Cancel square and root) \ \
The solution is 6. \ \
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=08ea5fcba0e634e9d90c47a1b40a20cd.png\")
. ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=adbdfeb0c7079c44551ad49905fe1014.png\")
(Substitute: a = 48 and b = 12) \ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1ce9d0efb867e4f1cd5f03af55aace68.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=54430cbda6f242fa4049ceeae482b4a6.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7476b6dd378e72f25f5408861bf6bfee.png\")
(Write ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4b23e97acbca80148466634a693062f5.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b2d202faac0f2658fd141425a56f8983.png\")
(Cancel square and root) \ \
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")