Question

Calcule a distˆancia entre (−1, 3) e (4, −2)

Answer 1

$\sqrt{( - 1 - 4) ^{2} + (3 - ( - 2)) ^{2} } = \\ = \sqrt{( - 5)^{2} + {5}^{2} } = \\ = \sqrt{25 + 25} = \\ = \sqrt{50} = \\ = \sqrt{2 \times {5}^{2} } = \\ = 5 \sqrt{2}$