Rationalize the denominator of the following fraction 1/³√7 +³√3
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1\³√7+³√3= √7-√3\√7-√3
so by using (a+ b).(a -b)= a²-b²
√7-√3\(√7)²-(√3)²
√7-√3\7-3
√7-√3\4
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