The answer choice which is not a possible variable term in the expansion of the binomial; (x + y)⁶ is; x⁵y².
It follows from the task content that the intended expression for expansion is; (x + y)⁶.
It therefore follows from conventional concepts of binomial expansion that the highest degree of any term in the expression be equal to 6.
However, the term x⁵y² upon summation of the exponents results in 7 by virtue of 5+2.
Hence, the correct answer choice is; x⁵y².
Read more on binomial expansion;
https://brainly.com/question/13602562
#SPJ1
