[tex]Rule = \sqrt{ (x2 - x1)^{2} + (y2- y1)^{2}} [/tex]
[tex]( 7 - (-3)) ^{2} + (4 - (-2))^{2}[/tex]
[tex] \sqrt{10^{2} + 6^{2}} = \sqrt{100 +36} = \sqrt{136} [/tex]
[tex] \sqrt{136} = 2\sqrt{34} [/tex]
Namely,
Shouldn't be [tex]( 7 - (-3)) ^{2} - (4 - (-2))^{2}[/tex]
Should be ; [tex]( 7 - (-3)) ^{2} + (4 - (-2))^{2}[/tex]
Have a nice day..
