under root 7 multiplied by under root 7 is rational or irrational
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it is rational number because under root 7 multiplied by under root 7 gives 7 and 7 is a rational number
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√7×√7
= √7×7
= √49
= 7
7 is rational number
if we multiplied √n × √n = n it is always rational number
= √7×7
= √49
= 7
7 is rational number
if we multiplied √n × √n = n it is always rational number
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