![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The equation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b9dbaa8e1c061154e41a528bd099e7cb.png\")
.
Compare the equation with ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3ff6b57b5cabd0076d1296a57af93284.png\")
.
a = 4, b = 4 and c = 1
\a) Now we can find discriminant value
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=42b1f9a7d3dff3da6a43633a6fdf59ae.png\")
(Substitute a = 4, b = 4 and c = 1)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=35df39412a6c663dc5fdfec681add217.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ff5ba85967359c985c0b4ad4ca1cac05.png\")
= 0.
\b) The discriminant is 0, so the equation have one rational root.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The discriminant value is 0 and the equation have one rational root.