Answer: The factorization of all the parts are :
Part A : 
Part B : 
Part C : 
Step-by-step explanation: We are given to factorize the following quadratic polynomials :
Part A : Factor x²y² + 6xy² + 8y².
Part B : Factor x² + 8x + 16.
Part C: Factor x² − 16.
We will be using the following factorization formulas :

The factorization of all the parts area as follows :
<u><em>Part A :</em></u>
We have

So, 
<u><em>Part B : </em></u>
We have

So, 
<u><em>Part C :</em></u>
We have

So, 
Thus, all the parts are factorized.