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Find the roots of the equation using the Quadratic Formula
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$x^2+2x-15=0$
Learn how to solve equations problems step by step online. Find the roots of x^2+2x+-15=0. Find the roots of the equation using the Quadratic Formula. Factor the trinomial x^2+2x-15 finding two numbers that multiply to form -15 and added form 2. Thus. Break the equation in 2 factors and set each equal to zero, to obtain.