The expression is .
(Substitute: a = 26 and b = 10)
(Subtract: )
(Write )
(Cancel square and root)
The solution is 4.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=08ea5fcba0e634e9d90c47a1b40a20cd.png\")
. ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e3859e9ec22c0258c1025d4a0ed53b77.png\")
(Substitute: a = 26 and b = 10) ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b233e9eaacd9c0659463c65ab05191ae.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8f1374e3d83f3985f9f80938f0c0e568.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d70ebc0563e3f0e71ea3da861ed7ed2d.png\")
(Write ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4904bdb970abc0b1634dc3526cf872b7.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=962cee740d5fd9db1dfcb4ec34098e6a.png\")
(Cancel square and root) ![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")