![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The definition of product of the two functions is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1600dcfd1c5dcc98e08220c9e0a0c196.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=91c91bd6fd985ff0318561afcc6b9c14.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1c0e2f7d07ac8928d5a37a4104921ea1.png\")
(Simplify)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dc22a9530b32b192b4acb02e2546f1e3.png\")
(Combine like terms)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=203fee62349c24e832f2c41d5c93fbc4.png\")
(Substitute x for 2)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=32101221b9ef62dbefa49a58fc32ec7f.png\")
(Simplify)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d406cd103a36c1c773c132d8cf6738b6.png\")
(Simplify)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The value of the function is 20.