Question

Stind ca punctele A(-2:4) si B(5:2) , calculati lungimea segmentului AB

Answer 1

Explicație pas cu pas:

AB=√(Xa-Xb)^2+(Ya-Yb)^2

AB=√(-2-5)^2+(4-2)^2

AB=√-7^2+2^2

AB=√49+4

AB=√53cm

Answer 2

Răspuns:

$AB=\sqrt{(x_{2}-x_{1} )^{2}}+(y_{2}-y_{1} )^{2}\\ \\=\sqrt{[5-(-2)]^{2}+(2-4^{2})} \\\\=\sqrt{7^{2}+(-2)^{2}} \\\\=\sqrt{49+4}\\ \\=\sqrt{53}~cm$