共50条信息
计算:\({{\left( \sqrt{3}-2 \right)}^{0}}+{{\left( \dfrac{1}{3} \right)}^{-1}}+4\cos 30\circ -\left| 4-\sqrt{12} \right|\).
\((\sqrt{7}-1)^{0}-(-\dfrac{1}{2})^{-2}+\sqrt{3}\tan 30^{\circ}\);
计算:\(-2^{2}+ \sqrt{8} \)\(\cos \)\(45^{\circ}+(- \dfrac{1}{2} )^{-2}-(π-2017)^{0}\)
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