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Find the roots of the equation using the Quadratic Formula
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$4\cos\left(3\right)x-3=0$
Learn how to solve equations problems step by step online. Find the roots of 4cos(3)x-3=0. Find the roots of the equation using the Quadratic Formula. The cosine of 3 equals . Multiply 4 times -\frac{99}{100}. We need to isolate the dependent variable , we can do that by simultaneously subtracting -3 from both sides of the equation.