Rewrite 5x with 4x and 9x. Product of Roots ca. H b2a 12 2x2 3.
Unlike the trial and error method the Product Sum Method is generally easier to apply since it identifies an equation that cannot be factored.
Work backwards to write a quadratic equation that will have solutions of x 12 and x 2. Work backwards to write a quadratic equation that will have solutions of x -12 and x 4. Solving quadratics by factorizing link to previous post usually works just fine. And we see them on this graph.