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Exercitiul 7!Urgeent!

Exercitiul 7Urgeent class=

Răspuns :


[tex]\it AB^2 = (x_B-x_A)^2 +(y_B-y_A)^2 = (4-0)^2 +(7-1)^2 = 16 +36= \\ \\ = 54 \Rightarrow AB= \sqrt{52} =\sqrt{4\cdot13} =2\sqrt{13}\ u.m.[/tex]