Cześć!
Obliczenia
[tex]A=(2,2)\longrightarrow x_A=2, \ y_A=2\\\\B=(9,-3)\longrightarrow x_B=9, \ y_B=-3\\\\|AB|=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}\\\\|AB|=\sqrt{(9-2)^2+(-3-2)^2}\\\\|AB|=\sqrt{7^2+(-5)^2}\\\\|AB|=\sqrt{49+25}\\\\\huge\boxed{|AB|=\sqrt{74}}[/tex]
