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Find the roots of the equation using the Quadratic Formula
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$t^2+8t-9=0$
Learn how to solve equations problems step by step online. Find the roots of t^2+8t+-9=0. Find the roots of the equation using the Quadratic Formula. Factor the trinomial t^2+8t-9 finding two numbers that multiply to form -9 and added form 8. Thus. Break the equation in 2 factors and set each equal to zero, to obtain.