Question

Daca A(2,-2) si B(-3,5), calculati AB.

Answer 1

AB=√(Xa-Xb)²+(Ya-Yb)²=
=√[2-(-3)]²+[-2-(5)]²=
=√[(5)²+(-7)²]=√(25+49)=√74≈8,60

Answer 2

$AB= \sqrt{ ( x_{B} - x_{A}) ^{2}+( y_{B} -y_{A} )^{2} } = \sqrt{(-3-2)^{2}+(5+2)^{2}}$
$AB=\sqrt{25+49}= \sqrt{74}$