DEPRECATED Properties of matrix multiplication

Problem

In detention yet again, the Breakfast Club must complete a matrix problem correctly before they are released by Mr. Vernon. The last step of the problem is
space, A, start superscript, 2, end superscript, left parenthesis, B, start superscript, 2, end superscript, plus, C, start superscript, 2, end superscript, right parenthesis
(A, B, and C are square matrices.)
Which of the students have expressions that are equivalent to this expression? (Select all who are right for any A, B, and C.)
Choose all answers that apply:
Choose all answers that apply:
Do 7 problems