144) b^{\sqrt{3}}*(\frac{1}{b})^{\sqrt{3}-1}=b^{\sqrt{3}}*b^{1-\sqrt{3}}=b^{\sqrt{3}+1-\sqrt{3}}=b\\\\145) b^{1,2}*b^{1,8}:b^{\frac{3{2}}=b^{1,2}*b^{1,8}:b^{1,5}=b^{1,2+1,8-1,5}=b^{1,5}\\\\146) (\frac{1}{x})^{\sqrt{2}-1}*x^{\sqrt{2}}:x^{-4}=x^{1-\sqrt{2}}*x^{\sqrt{2}}:x^{-4}=x^{1-\sqrt{2}+\sqrt{2}+4}=x^{5}\\\\147) a^{\sqrt{2}} *(\frac{1}{a})^{\sqrt{2}-1} =a^{\sqrt{2}}*a^{1-\sqrt{2}}=a^{\sqrt{2}+1-\sqrt{2}}=a\\\\148) (a^{\sqrt{3}})^{\sqrt{3}}