![]() Obtain the equation whose roots are (a) D 3, and E 3, (b) 3 D and 3 E, (c) E D and D E. The equation 4 8 9 0xx2 has roots D and E. O Level Add Math : Quadratics – SOR, POR 2011 KL Ang Dec 2011 7. ![]() ![]() Solving Quadratic Equations by Completing the Square Step 3: Factor the perfect square trinomial on the left side of the equation.We may however, be given a quadratic equation that is not in this form and so our first step is to re‑write the equation into this standard form. Equations that can be rearranged to be a quadratic equation in standard form The standard form for a quadratic equation is ax2 + bx + c = 0, a ≠ 0.
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