The equation is and the value of .
(Write original equation)
(Substitute )
(Use calculator)
(Rule of expansion)
(Simplify)
The equation, is true at .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=692db644b1322d3cdc761ae66a83f3d8.png\")
and the value of ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a6c0b8144193b27265583add6cc05e68.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=692db644b1322d3cdc761ae66a83f3d8.png\")
(Write original equation)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b204ed1a65bbdc4d93c27edda74f4f46.png\")
(Substitute ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a6c0b8144193b27265583add6cc05e68.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=47873d3aa795834ab3c4be577799d5a9.png\")
(Use calculator)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fb2154e8936b634b92157bd2a5002de9.png\")
(Rule of expansion)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=44deeabcdb828be6ea79f0fda946bd22.png\")
(Simplify)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
is true at .