Question 676642



{{{x=a+b+sqrt(a^2+b^2)}}}


{{{x-a-b=sqrt(a^2+b^2)}}}


{{{x-(a+b)=sqrt(a^2+b^2)}}}


{{{(x-(a+b))^2=(sqrt(a^2+b^2))^2}}}


{{{x^2-2x(a+b)+(a+b)^2=a^2+b^2}}}


{{{x^2-2x(a+b)+a^2+2ab+b^2=a^2+b^2}}}


{{{x^2-2x(a+b)+cross(a^2)+2ab+cross(b^2)=cross(a^2)+cross(b^2)}}}


{{{x^2-2x(a+b)+2ab=0}}}


{{{x^2-2xa+2xb+2ab=0}}}


{{{2xb+2ab=-x^2+2ax}}}


{{{2b(x+a)=-x^2+2ax}}}


{{{b=(-x^2+2ax)/2(x+a)}}}