Question 304338
x^2+(x-1)^2=2
x^2+x^2-2x+1=2
2x^2-2x+1-2=0
2x^2-2x-1=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
x=2+-sqrt[-2^2-4*2*-1])/2*2
x=(2+-sqrt[4+8)/4
x=(2+-sqrt12)/4
x=(2+-3.464)/4
x=(2+3.464)/4
x=5.464/4
x=1.366 ans.
x=(2-3.464)/4
x=-1.464/4
x=-.366 ans.