$\"\"$

(a)

The polynomial function is $\"\"$ .

Draw a coordinate plane.

Graph the polynomial function.

Graph :

$\"graph$

Observe the graph of the function :

The zeros are $\"\"$ .

$\"\"$

(b)

The polynomial function is $\"\"$ .

Observe the above graph of the function :

The exact zero is 4.

$\"\"$

(c)

The polynomial function is $\"\"$ .

From (b), $\"\"$ is a factor of polynomial $\"\"$ .

$\"\"$

By using remainder theorem $\"\"$ and by using factor theorem $\"\"$ is a factor of $\"\"$ .

Factorize the quadratic expression $\"\"$ .

$\"\"$

$\"\"$ .

The complete factorization of $\"\"$ is $\"\"$ . $\"\"$

(a)

Graph of the function $\"\"$ is : \ \

$\"graph$

The zeros are $\"\"$ .

(b)

The exact zero is 4.

(c)

The complete factorization of $\"\"$ is $\"\"$ .