SOLUTION: what is the geometric mean of 2a and 4a

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Question 723308: what is the geometric mean of 2a and 4a
Answer by MathLover1(20849) About Me  (Show Source):
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What is the geometric mean of: 2a and 4a?

take the product 2a+%2A4a=8a%5E2
because there are only two numbers, the nth root is the square root, and the sqrt%288a%5E2%29=2a%2Asqrt%282%29