$\"\"$

Observe the table:

Find the point where the sign of $\"\"$ changes.

The sign of $\"\"$ changes when $\"\"$ is between $\"\"$ and $\"\"$ and again at a point when $\"\"$ is between $\"\"$ and $\"\"$ .

One zeros of the function is between $\"\"$ and $\"\"$ and another is between $\"\"$ and $\"\"$ .

$\"\"$

Location of one zero of the function is between $\"\"$ and $\"\"$ .

Another zero location is between $\"\"$ and $\"\"$ .