Tuesday, August 13, 2013

Solve: 2x=1-sqrt( 2-x)

%0D%0A2x=1-sqrt%28+2-x%29%0D%0A 
%0D%0Asqrt%28+2-x%29%5E2=%281-2x%29%5E2%0D%0A

%0D%0A2-x=1-4x%2B4x%5E2%0D%0A
4x%5E2-3x-1=0
%284x%2B1%29%28x-1%29=0%0D%0A

but only x=-1/4 is a solution 
at

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