Solve:
Since this equation is set equal to zero,
the zeros (roots) will be the locations where
the graph crosses the xaxis (if the roots are real numbers).
1. Set
2. Use the ZERO command to find the
zeros (roots)  2nd TRACE (CALC), #2 zero
3. Left bound? Move the spider
as close to the zero (root  where the graph crosses the xaxis)
as possible. Hit the left arrow to move to the "left" of the zero
(root). Hit ENTER. A "marker"
► will be set to the left of the
zero (root).
4. Right bound? Move the spider as
close to the zero (root  where the graph crosses the xaxis)
as possible. Hit the right arrow to move to the "right" of the zero
(root). Hit ENTER. A "marker"
◄ will be set to the right of
the zero (root).
5. Guess? Just hit
ENTER.
6. Repeat the entire process to find other zeros (roots  which
in this case the second root happens to be x = 7).
Answer: one of the
zeros (roots) is x = 2
