Square both sides so you get
(4x-1)-(x-1)=9
Open parenthesis
4x-1-x+1=9
As the ones cancel each other out
4x-x=9
Subtraction
3x=9
Divide both sides by 3
(3x)/3=9/3
You have solved for x
x=3
English
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It doesn't work like that. And the answers are 1 and 5. I don't know how to find them though.
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Edytowany przez użytkownika risay_117: 10/23/2013 5:41:22 PMYeah i see the problem. Anything missing though? Working on it.
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You squared the equations incorrectly, see my response for details :)
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Noticed that, after all when you square both sides you are squaring both square roots under one bracket.