Obliczenia
[tex]A=(-4,1)\longrightarrow x_A=-4, \ y_A=1\\\\B=(3,-5)\longrightarrow x_B=3, \ y_B=-5\\\\|AB|=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}\\\\|AB|=\sqrt{(3-(-4))^2+(-5-1)^2}\\\\|AB|=\sqrt{(3+4)^2+(-6)^2}\\\\|AB|=\sqrt{7^2+36}\\\\|AB|=\sqrt{49+36}\\\\\huge\boxed{|AB|=\sqrt{85}}[/tex]
