共50条信息
下面是某位同学进行实数运算的全过程,其中错误有几处?请在题中圈出来,并直接写出正确答案\(.\)计算:\(\sqrt{9}-\sqrt[3]{8}+\left| -\sqrt{2} \right|-{{\left( \sqrt{3}-\sqrt{2} \right)}^{0}}\).
解:原式
\(=\)\(\sqrt{9}- \sqrt{2}+ \sqrt{2}-0 \)
\(=\sqrt{9}-0 \)
\(=\sqrt{9} \)
\((1)\)计算:\({{(\pi -2017)}^{\circ }}+6\sin {{60}^{\circ }}-|5-\sqrt{27}|-{{(\dfrac{1}{2})}^{-2}}\)
\((2)\)先化简,再求值:\((1-\dfrac{2}{x-1})\div \dfrac{{{x}^{2}}-5x+6}{x-1}\),其中\(x\)从\(0\),\(1\),\(2\),\(3\)四个数中适当选取.
计算:\(\sqrt{9}+{{(\dfrac{1}{4})}^{-1}}-4\sin 60{}^\circ +{{(\sqrt{3}+2)}^{0}}\)
进入组卷