SOLUTION: Given that 4,2,x,y 324 is a geometric square, find the sum of x and y

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Question 1136569: Given that 4,2,x,y 324 is a geometric square, find the sum of x and y
Answer by ikleyn(52910) About Me  (Show Source):
You can put this solution on YOUR website!
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Unclear.

What the words "geometric square" mean in this context ?