Use algebra to show that $$\(0.5 \dot{7} \dot{2}=\frac{63}{110}\)$$ (2) Given that $$\(y\)$$ is a prime number, (b) express $$\(\frac{3}{2-\sqrt{y}}\)$$ in the form $$\(\frac{a+b \sqrt{y}}{c-y}\)$$ where $$\(a, b\)$$ and $$\(c\)$$ are integers. (2)

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