共50条信息
计算：\(2\cos 60{}^\circ -{{(-3)}^{-3}}+{{(\pi -\sqrt{3})}^{0}}-\left| -2 \right|\)．
如图：\(A\)，\(B\)，\(C\)三点表示的数分别为\(a\)，\(b\)，\(c.\)利用图形化简：\(\left|a-b\right|- \sqrt{{\left(c-b\right)}^{2}}+ \sqrt{{\left(a-c\right)}^{2}} \)．
计算：\({{(-\dfrac{1}{3})}^{-2}}+|{{(-3)}^{2}}-10|-(-2)\div {{(-1)}^{2019}}\)
\((2)(-x)⋅(3xy-6x^{2}y^{2})÷(3x^{2})\)
计算：\((2 \sqrt{3} -1)^{0}+|-6|-2(-\sin 45^{\circ})^{-2}+ \sqrt{16} \)．
\((2)|\sqrt{2} -\sqrt{3} |+|\sqrt{2} -1|\)．
计算：
\((_{1})\sqrt{12}\div \sqrt{6}\times \sqrt{2}-\left| \sqrt{2}-2 \right|\) \((2)\dfrac{1}{\sqrt{3}+1}-\dfrac{\sqrt{3}}{2}+\sqrt{32}\times \sqrt{\dfrac{1}{8}}\)
化简：\( \sqrt{3}\left( \sqrt{2}- \sqrt{3}\right)+\left| \sqrt{6}-3\right| \)
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