Question

The distance between the points (a, b) and
(-a, - b) is :​

Answer 1

Answer:

d = √ (x2-x1)^2 + (y2-y1)^2

= √(-a-a)^2 + (-b-b)^2

= √4a^2 + 4b^2

= √ 4( a^2 + b^2)

= 2√(a^2 + b^2)