... Change of sign method: This method finds the roots of an equation by looking at the points where the graph crosses x axis. In these case the value of f(x) change sign from positive to negative or vice versa. And the root must be some where between two values that change. For this equation: Function . I am going to use the decimal search. Check the shape of the graph This is quadratic equation a = 6, b = 0, c = -4 D = b2-4ac = 0)2- 4x6x(-4) = 96>0 the graph has 2 turning points. As the graph shows there are three roots. I calculated each of the f(x) values ...

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