Changes

[http://www.projectmaths.ie/students/strand4JC/student-activity-quadratic-formula.pdf| quadratic formula]<br>

[http://www.projectmaths.ie/students/strand4JC/student-activity-quadratic-formula.pdf| quadratic formula]<br>

Activity 3

Activity 3

[http://www.learnnc.org/lp/pages/2981| ]

[http://www.learnnc.org/lp/pages/2981|     learn quadratics]

==Concept #5'''Nature of roots'''==

==Concept #5'''Nature of roots'''==