SOLUTION: What is the geometric mean of -1.5 and -80? Screenshot of answer choices are below please copy and paste the link please. Link ; http://prntscr.com/aoz74e thanks

Question 1028449: What is the geometric mean of -1.5 and -80?
Screenshot of answer choices are below please copy and paste the link please.
Link ; http://prntscr.com/aoz74e thanks
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
We can find the answer by setting it up like this:

Now cross-multiply and get

so that
x = plus or minus 2*sqrt(30)
(The link did not work for me.)
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