![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
Observe the determinant matrices:
\Determinant of ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b7f5fef3a2037351e862dfa823c0911b.png\")
matrix formula: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a59b3ea7079c1afdb961b0e1485481ad.png\")
.
Therefore, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3a0b63ab9d64c857966c5c0534cdb852.png\")
.
The determinant of the matrix is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2f3a4fdeeeafa1c1b058c829821c313f.png\")
.
James is correct.
\Since, Amber takes product of the varibles and instead of subtraction he added the results of products.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
James is correct.