The distance between the two points will be given by: d=√[(x-x1)^2+(y-y1)^2] point z1=(3-2i) has the coordinates of (3,-2) point z2=(5-8i) has the coordinates of (5,-8) thus the distance between them will be: d=√[(-8-(-2)²+(5-3)²)] d=√[(-6)²+2²] d=√(36+4) d=√40 d=2√10