Question 1041649
{{{sqrt((-8-8)^2+(-x-x)^2)=100}}}



{{{sqrt(256+4x^2)=100}}}


{{{sqrt(4*64+4x^2)=2*50}}}


{{{sqrt(64+x^2)=50}}}


{{{x^2+64=2500}}}


{{{x^2=2500-64}}}


{{{x^2=2436}}}


{{{x^2=12*203=2*2*3*7*29}}}

{{{x=2*sqrt(3*7*29)}}}

{{{x=2sqrt(609)}}}------pick the choice that matches.