Monday, June 24, 2013

Solve: √x+3=3-x

Assuming you meant to write: 
%0D%0Asqrt%28x-3%29=3-x%0D%0A 

then 

%0D%0Asqrt%28x-3%29%5E2=%283-x%29%5E2%0D%0A 

%0D%0A%28x-3%29%5E2-%28x-3%29=0%0D%0A 

%0D%0A%28x-3%29%28x-3%2B1%29=0%0D%0A 

so that x=3 or x=4 (extraneous) 

:)
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