Объяснение:
[tex] \sqrt{(4 - 5 {)}^{2} + (1 - 4 {)}^{2} } = \sqrt{1 + 9} = \sqrt{10} [/tex]
АВ=
[tex] \sqrt{(x2 - x1 {)}^{2} + (y2 - y1 {)}^{2} } [/tex]
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Объяснение:
[tex] \sqrt{(4 - 5 {)}^{2} + (1 - 4 {)}^{2} } = \sqrt{1 + 9} = \sqrt{10} [/tex]
АВ=
[tex] \sqrt{(x2 - x1 {)}^{2} + (y2 - y1 {)}^{2} } [/tex]