Question

Calculati d(AB) din sistemul de coordonate XOY: 0(0,0) A(2,-2) B(6,8)

Answer 1

$AB= \sqrt{(X _{A} -X _{B}) ^{2} +(Y _{A}-Y _{B}) ^{2} } = \sqrt{(2-6) ^{2} +(-2-8) ^{2} }$
AB=√116 =>AB=2√29