Jambmaths question: The required region is A. $x\le -1,\text{ }x\ge 4$ B. $x\le 4$ C.$-1\le x\le 4$ D. $x\le -1,0\le x\le 4$ Jamb Maths Topic: Quadratic Expression and EquationsYear of Exam: Jamb Maths 2016