The equation is
.
Rewrite the equation 
Graph the related function
.
\
| \
w \ | \
\
f (x) \ | \
| \
5 \ | \
\
5 \ | \
| \
4 \ | \
\
| \
| \
3 \ | \
\
| \
| \
2 \ | \
\
| \
| 1 | \ 7 | \
| \
0 \ | \
5 | \
1 | \
1 | \
2 | \
5 | \
Graph:
\
The w-intercepts are between 5 and 4 and between
and
.
So,one root is between 5 and 4 and the other root is between
and
.