D'aprĂšs l'identitĂ© du parallĂ©logramme on a: $$|z_1-z_2|^2+|z_1+z_2|^2=2(|z_1|^2+|z_2|^2)=2(1^2 +1^2)=4$$ Et Donc: $$|z_1-z_2|^2=1$$ Soit: $$\color{purple}\boxed{|z_1-z_2|=1}$$ đ Related Exercise This is a solution to an exercise. View Exercise â â Back to All Posts