共50条信息
计算:\(4\sin 30^{\circ}-{\left(π-3\right)}^{0}+\left| \sqrt{3}-2\right|+{\left( \dfrac{1}{2}\right)}^{-2} \)
计算:\({6}\cos 60{}^\circ -\sqrt{27}+{{({ }\!\!\pi\!\!{ }-{2})}^{{0}}}-\left| \sqrt{{3}}-{2} \right|\).
计算:
\(\cos 45{}^\circ -{{2}^{-1}}+\sqrt{{{(-2)}^{2}}}-{{(\pi -\tan 30{}^\circ )}^{0}}-|\sqrt{2}-1|\)
计算:\({{\left( -1 \right)}^{3}}-{{\left( \dfrac{1}{3} \right)}^{-2}}+{{\left( 2-\sqrt{2} \right)}^{0}}-\left| -2 \right|\).
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