共50条信息
下列命题中正确的是 ( )
下列正确的有:\(①\)若\(x\)与\(3\)互为相反数,则\(x+3=0\);\(②-\dfrac{1}{2}\)的倒数是\(2\);\(③|-15|=-15\);\(④\)负数没有立方根.
下列各数中,最小的数是( )
\({{\left( -1 \right)}^{2018}}\)的倒数等于\((\) \()\)
下列说法:\(①π\)的相反数是\(-π\);\(②\)若\(\left| x \right|=\sqrt{6}\),则\(x=\sqrt{6}\);\(③\)若\(a\)为实数,则\(a\)的倒数是\(\dfrac{1}{a}\);\(④\)若\(\sqrt{{{x}^{2}}}=-x\),则\(x < 0.\)其中正确的有\((\) \()\)
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