Answer:
7√2 units
Step-by-step explanation:
( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] ) and ( [tex]x_{2}[/tex] , [tex]y_{2}[/tex] )
d = [tex]\sqrt{(x_{2} -x_{1} )^2 + (y_{2} -y_{1})^2 }[/tex]
( - 2 , - 1 )
( 5 , 6 )
d = [tex]\sqrt{(-2-5)^2 + (-1-6)^2}[/tex] = 7√2 units