Solve the inequality x^2-x-2

You will learn how to find the solution set of a quadratic inequality using graphical method.
#pure_math_1
#AS_level_maths
#quadratics
#quadratic_equation
#solving_quadratic_equation
#quadratic_formula
#completing_the_square
#intersection_points
#roots_of_quadratics
#zeros_of_function
#x_intercept
#y_intercept
#vertex_form
#axis_of_symmetry
#discriminant_term
#quadratic_inequality
#factoring_quadratics
#factorization_method
#two_roots
#two_intersection_point
#similar_roots
#repeated_roots
#simultaneous_equations
#solving_quadratic_equations
#topical_questions
#exam_revision