Show that $$\(\sqrt{45}+\sqrt{20}=5 \sqrt{5}\)$$ Show your working clearly. (2) (b) Express $$\(\frac{2}{\sqrt{3}-1}\)$$ in the form $$\(p+\sqrt{q}\)$$ where $$\(p\)$$ and $$\(q\)$$ are integers. Show your working clearly. (2) (c) Express $$\(x^{2}+6 \sqrt{2} x-1\)$$ in the form $$\((x+a)^{2}+b\)$$ Show your working clearly. (2)

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