Saturday, June 15, 2013

Please help me solve the radical equation: sqrt (x+2) + sqrt (3x+7) = 1

%0D%0Asqrt+%28x%2B2%29+%2B+sqrt+%283x%2B7%29+=+1%0D%0A 


%0D%0Asqrt+%28x%2B2%29%5E2++=+%281-sqrt+%283x%2B7%29%29%5E2%0D%0A 

%0D%0Ax%2B2=1-2+sqrt%283x%2B7%29%2B3x%2B7%0D%0A 


%0D%0A2x%2B6=2sqrt+%283x%2B7%29%0D%0A 


%0D%0Ax%2B3=-sqrt%283x%2B7%29%0D%0A 



%0D%0A%28x%2B3%29%5E2=%28-sqrt%283x%2B7%29%29%5E2%0D%0A 

%0D%0Ax%5E2%2B6x%2B9=3x%2B7%0D%0A 

%0D%0Ax%5E2%2B3x%2B2=0%0D%0A 



x%5B1%5D=-2 

x%5B2%5D=-1 (extraneous)
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