The expression is .
(Apply Pythagorean identity: )
(Simplify)
(Multiply)
The simplified expression value is 2.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5bc2c37b481ac07d747149abff46bfa9.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8ecf9476bbc8d34834d09f4b01cd963e.png\")
(Apply Pythagorean identity: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e5c23d3e48e4128aaac9c62a1918a829.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9d50307a6563357567bbe1fcafafe845.png\")
(Simplify)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5e095665a965a1a4779477fcd271e7c1.png\")
(Multiply) ![\"\"](\"/userfiles/image/steps_images/solution.JPG\")