Question

distance between two points (8, 9) and (2,3)

Answer 1

Let x₁ = 8 , y₁ = 9 , x₂ = 2 , y₂ = 3 .
Distance between two points = √(x₁-x₂)²+(y₁-y₂)²
                                                = √(8-2)²+(9-3)²
                                                = √6²+6²
                                                = √36+36
                                                = √72.
The distance between the points (8,9) and (2,3) is √72 .