Odpowiedź:
[tex]\boxed{|AB| = \sqrt{89}}[/tex]
Szczegółowe wyjaśnienie:
[tex]A = (-1,-5) \ \ \rightarrow \ \ x_{A} = -1, \ \ y_{A} = -5\\B = (4,3) \ \ \ \ \ \ \rightarrow \ \ x_{B} = 4, \ \ y_{B} = 3\\\\|AB| = \sqrt{(x_{B}-x_{A})^{2}+(y_{B}-y_{A})^{2}}}\\\\\\|AB| = \sqrt{(4-(-1))^{2}+(3-(-5))^{2}} = \sqrt{5^{2}+8^{2}} = \sqrt{25+64} = \sqrt{89}[/tex]
