rationalize the denominator 7 by 3 root 5
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7/3√5 ×3√5/3√5
7(3√5)/(3√5)^2
21√5/45
÷ 7√5/15 answer OK
7(3√5)/(3√5)^2
21√5/45
÷ 7√5/15 answer OK
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ok it is very easy i solve to you
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