SOLUTION: Give exact and approximate solutions to three decimal places. (x-1)^2 = 16

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Question 394791: Give exact and approximate solutions to three decimal places.
(x-1)^2 = 16
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

%28x-1%29%5E2=16 Start with the given equation.


x-1=%22%22%2B-sqrt%2816%29 Take the square root of both sides.


x-1=sqrt%2816%29 or x-1=-sqrt%2816%29 Break up the "plus/minus" to form two equations.


x-1=4 or x-1=-4 Take the square root of 16 to get 4.


x=1%2B4 or x=1-4 Add 1 to both sides.


x=5 or x=-3 Combine like terms.


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Answer:


So the solutions are x=5 or x=-3.


If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website

Jim