Answer :
The expressions is equivalent to z + z+z + z would be 4z. so option A is correct.
What are equivalent expressions?
Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.
Given expression
z + z+z + z
All the terms are like terms, by adding all of them
z + z+z + z
= 4z
Thus, The expressions is equivalent to z + z+z + z would be 4z. so option A is correct.
Learn more about factorization of quadratic expression here:
https://brainly.com/question/26675692
#SPJ2