|MN| = (x1−x2)2+(y1−y2)2\sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}(x1−x2)2+(y1−y2)2
= (−3−5)2+(8−7)2\sqrt{(-3 -5)^2 + (8 - 7)^2}(−3−5)2+(8−7)2
= (−8)2+(8+7)2\sqrt{(-8)^2 + (8 + 7)^2}(−8)2+(8+7)2
= 64+(15)2\sqrt{64 + (15)^2}64+(15)2
= 64+225\sqrt{64 + 225}64+225
= 289\sqrt{289}289
= 17 units
