Question 404371
{{{(a+b)*(a+b)=(a+b)^2}}}
Formula {{{(a+b)^2=a^2+2ab+b^2}}}
Thats why {{{(1+sqrt(50))*(1+sqrt(50))=1+2sqrt(50)+50}}} is correct.
{{{1+2sqrt(50)+50=51+2sqrt(50)}}} is correct,
but {{{2*sqrt(50)=2*sqrt(25*2)=2*sqrt(25)*sqrt(2)=2*5*sqrt(2)=10sqrt(2)}}}
So {{{51+2sqrt(50)=51+10sqrt(2)}}}