If ~$M=\sqrt{4}+\sqrt[3]{4}+\sqrt[4]{4}$~, then the value of M is
less than 3
equal to 3
between 3 and 4
equal to 4
greater than 4
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any positive integer root from a number more than 1 will be more than 1
化简成2的根号形式，根号2等于1.414...
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any positive integer root from a number more than 1 will be more than 1
化简成2的根号形式，根号2等于1.414...