<PRE><B>Question 723140</B>
4 is the index number and under the radical is x^2 which is to be multiplied by 5 as the index number and under the radical is x^3.
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^4(x^2)*^5(x^3) 
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(4th root of x^2) * (5th root of x^3)
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Least common multiple for 4th and 5th is 20th
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= (20th root of x^10) * (20th root of x^12)
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= 20th root of x^22
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= x*(20th root of x^2)
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Cheers,
Stan H.
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