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Mathematics
Problem
Which expression should be multiplied to both the numerator and the denominator of
3
7
3
\dfrac{3}{\sqrt[3]{7}}
3
7
3
so that the denominator becomes a rational number? a)
7
3
\sqrt[3]{7}
3
7
b)
7
2
3
\sqrt[3]{7^{2}}
3
7
2
c)
7
7
3
7\sqrt[3]{7}
7
3
7
d)
7
3
3
\sqrt[3]{7^{3}}
3
7
3
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