共50条信息
\(6\cos 45^{\circ}+( \dfrac{1}{3})^{-1}+( \sqrt{3}-1.73)^{0}+|5-3 \sqrt{2}|\)
\((2)\)因式分解：\(m^{2}{-}4m\)．
计算：\(2\cos 60{}^\circ -{{(-3)}^{-3}}+{{(\pi -\sqrt{3})}^{0}}-\left| -2 \right|\)．
计算题\(| \sqrt{2}|+(- \dfrac{1}{3}{)}^{-1}-2\cos 45^{\circ}+(π-2017{)}^{0} \)
\((2) \dfrac{\cos 45^{\circ}}{\sin 45^{\circ}}+2\sin 60^{\circ}\tan 60^{\circ}- \dfrac{1}{\tan 30^{\circ}}\)
计算：\(- \sqrt{8} +|- \sqrt{2} |+2\sin 45^{\circ}+π^{0}+( \dfrac{1}{2} )^{-1}\)．
计算与解分式方程．
\((1)\left| 1-2\sin 45{}^\circ \right|-\sqrt{8}+{{\left( \dfrac{1}{2} \right)}^{-1}}\) \((2)\dfrac{x+1}{x+3}-\dfrac{2}{x-3}=1\)
\(2\sin 30{}^\circ +\cos 60{}^\circ -\tan 60{}^\circ \tan 30{}^\circ +{{\cos }^{2}}45{}^\circ \)
进入组卷