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Find the roots of the equation using the Quadratic Formula
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$4x^2+12x-16=0$
Learn how to solve equations problems step by step online. Find the roots of 4x^2+12x+-16=0. Find the roots of the equation using the Quadratic Formula. To find the roots of a polynomial of the form ax^2+bx+c we use the quadratic formula, where in this case a=4, b=12 and c=-16. Then substitute the values of the coefficients of the equation in the quadratic formula: \displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}. Simplifying. To obtain the two solutions, divide the equation in two equations, one when \pm is positive (+), and another when \pm is negative (-).