Question

find the distance between P(2,1) and Q(-1,-2)​

Answer 1

$\fbox{ ANSWER }$

p(2, -1)=x1y1

Q(3, 4)=x2y2

distance between the two points =root(x2-x1)*2+(y2-y1)*2

=root (3-2)*2+(4+1)*2

=root (1)*2+(5)*2

root 1+25

root 26