The ornamental design for a rootcuttingtool, as shown and described.
FIG. 1 is a front perspective view of a root cutting tool;
FIG. 2 is a rear perspective view of the root cutting tool;
FIG. 3 is a front view of the root cutting tool;
FIG. 4 is a rear view of the root cutting tool;
FIG. 5 is a left side view of the root cutting tool;
FIG. 6 is a right side view of the root cutting tool;
FIG. 7 is a top view of the root cutting tool;
FIG. 8 is a bottom view of the root cutting tool; and,
FIG. 9 is a close up front perspective view of the root cutting tool.
The broken lines in FIGS. 1-9 representing the handle, grip, and foot rests of the root cutting tool, show the design as being used, and form no part of the claimed design.