Turning square roots into decimals: 5/2 +- sqrt(5)/2

ryana

New member
Joined
Jan 14, 2008
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15
I've been running into problems that are expecting me to turn roots into decimals... example:

x^2 -5x + 5 = 0

The quadratic formula gives me 5/2 +- squareroot(5)/2
The answer expected to be 3.62 and 1.38 and I have no clue how to get there.
 
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