Question

Distanta dintre punctele  A(-3;7) si B(6;-5) este egala cu...?

Answer 1

$AB= \sqrt{(x _{B} -x _{A}) ^{2} +(y _{B} -y _{A} ) ^{2}$
$AB= \sqrt{(6+3) ^{2} +(-5-7) ^{2} }$
$AB= \sqrt{81+144} ;AB= \sqrt{225} =\ \textgreater \ AB=15 cm$