SOLUTION: give exact and approximate solutions to three decimal places. x^2+3x-5=0 thank you

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Question 257080: give exact and approximate solutions to three decimal places.
x^2+3x-5=0
thank you
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
We can solve the following
x%5E2%2B3x-5=0+
by completing th square as
%28x%2B1.5%29%5E2+-7.25=0
and solving for x we get
%28x%2B1.5%29%5E2+=+7.25
x%2B1.5+=+%2B-sqrt%287.25%29
x+=+-1.5+%2B-+sqrt%287.25%29
x ~ 1.193
x ~ -4.193