\(a,=\left(2\sqrt{3}-\sqrt{3}+9\sqrt{3}\right)\sqrt{3}-\dfrac{5}{2}=10\sqrt{3}\cdot\sqrt{3}-\dfrac{5}{2}=30-\dfrac{5}{2}=\dfrac{55}{2}\\ b,=\dfrac{\sqrt{3}\left(\sqrt{3}+3\right)}{\sqrt{3}}+\dfrac{\left(1+\sqrt{2}\right)^2}{-1}-3\sqrt{3}+2\sqrt{2}\\ =\sqrt{3}+3-3-2\sqrt{2}-3\sqrt{3}+2\sqrt{2}=-2\sqrt{3}\)
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