Part of the graph of $$\(y=2 x^{2}-4 x-1\)$$ is shown on the grid. (a) Use the graph to find estimates for the solutions of the equation $$\(2 x^{2}-4 x-1=0\)$$ Give your solutions correct to one decimal place. (2) (b) By drawing a suitable straight line on the grid, find estimates for the solutions of the equation $$\(x^{2}-x-1=0\)$$ Show your working clearly. Give your solutions correct to one decimal place. (3)

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