$\"\"$

The function is $\"\"$ .

The factors are $\"\"$ and $\"\"$ .

Perform the synthetic division method to test each factor.

Synthetic division for factor $\"\"$ .

The divisor is in the form of $\"\"$ .

$\"\"$

Depressed polynomial is $\"\"$ .

$\"\"$

Synthetic division for factor $\"\"$ .

The divisor is in the form of $\"\"$ .

$\"\"$

Depressed polynomial is $\"\"$

$\"\"$ .

$\"\"$

$\"\"$ .