SOLUTION: give the exact and appropriate solutions to 3 decimal places (x-6)^2=81

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Question 215128: give the exact and appropriate solutions to 3 decimal places (x-6)^2=81
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

%28x-6%29%5E2=81 Start with the given equation.


x-6=%22%22%2B-sqrt%2881%29 Take the square root of both sides.


x-6=sqrt%2881%29 or x-6=-sqrt%2881%29 Break up the "plus/minus" to form two equations.


x-6=9 or x-6=-9 Take the square root of 81 to get 9.


x=6%2B9 or x=6-9 Add 6 to both sides.


x=15 or x=-3 Combine like terms.


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Answer:


So the solutions are x=15 or x=-3.