共50条信息
计算：
\((1)\sqrt{81} +\sqrt[3]{-27} +\sqrt{{\left(- \dfrac{2}{3}\right)}^{2}} \)
\((2)3\sqrt{2} -|\sqrt{3} -\sqrt{2} |.\)
\(①-{{1}^{2}}-\sqrt[3]{-27}\times \left| -\dfrac{1}{3} \right|+2\div \sqrt{4}\)；
\(②\sqrt{2}\left( \sqrt{2}-1 \right)+\left| 1-\sqrt{2} \right|\)．
求下列各式中\(x\)的值\((1)(x-2)^{3}=8\)；
\((2)64x^{2}-81=0\)．
计算：\(\left| \sqrt{3}-2\right|+ \sqrt[3]{8}+ \sqrt{{\left(-2\right)}^{2}}-\left|-2\right| \)
计算：\((1)\)\(\sqrt[3]{(1- \dfrac{1}{9})( \dfrac{2}{3}-1)}- \sqrt{(-4{)}^{2}}× \sqrt{ \dfrac{1}{4}} \)．
\((2)\sqrt[3]{-1}-\left( \sqrt[3]{8}-4 \right)\div \sqrt{{{6}^{2}}}+|\sqrt{3}-2|\)
\(19.(1)\) \(-{{1}^{2018}}+\left| 1-\sqrt{3} \right|-\sqrt[3]{\dfrac{1}{8}}+\sqrt{{{(-2)}^{2}}}\)
\((2)\begin{cases}3x-4 > 2\left(x-2\right)\;\;\;① \\ \dfrac{3x-2}{5}- \dfrac{2x+1}{3}\geqslant 1\;\;②\end{cases} \)
\((1)2\sqrt{2} +\sqrt{9} +\sqrt[3]{-8} +|\sqrt{2} -2|\)
\((1)\) \((2)\)
进入组卷