1.

Find the distance between the pair of points (-5, 7), (-1, 3)​

Answer»

<P>P = (-5,7)

Q = (-1,3)

pq = \sqrt{( - 5 + 1) {}^{2} } + (7 - 3) {}^{2}

= \sqrt{( - 4) {}^{2} } + (4) {}^{2}

= \sqrt{16 + 16}

= \sqrt{32}

= \sqrt{16 \times 2}

= 4 \sqrt{2} units


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