Inequalities, grade 9, question 1

01/03/2017 Grade 9 3,377
    1. Given A = 9x2-12x+4 and B =4-9x2
    • Show that A – B = 6x(3x-2)
    • Solve the inequality A-B < 6(3x2-1) and represent the solution on a number line and in the interval form.