![\"\"](\"../../../userfiles/image/steps_images/step1.JPG\")
The equations are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5a6d5f2e9fe0da969e871d761951cc04.png\")
.
The equations are lie on the graph is
![\"graph](\"/userfiles/image/Library/Trigonometry/graph_the_function_y=x%5E4+x%5E2-1_y=x%5E2-1_by_x%5E2+1.gif\")
![\"\"](\"../../../userfiles/image/steps_images/solution.JPG\")
The equations are lie on the graph is
\
The expressions are .
The expressions are lie on the graph is
From the graph the two expressions are equivalent.
The expressions are lie on the graph is
From the graph the two expressions are equivalent.
\