Question

Find the distance b/w two points (1,7) and (-2,3)

Answer 1

$x_1=1\\\\x_2=-2\\\\y_1=7\\\\y_2=3\\\\Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\=\sqrt{(-2-1)^2+(3-7)^2}\\ \\=\sqrt{(-3)^2+(-4)^2}\\\\=\sqrt{9+16}\\\\=\sqrt{25}\\\\=5units$