In order for a matrix A to have an inverse,its determinant cannot be zero.Derive the determinant of the following matrices:
A = 
B = 
X'X where X = (1 10)
Definitions:
Relational Aggression
A form of aggression that harms others through deliberate manipulation and damage to their relationships or social status.
Overt Aggression
Visible, external acts of verbal or physical hostility towards others.
School Years
The period of life spent in educational institutions, acquiring knowledge from early childhood through secondary education.
Opposite-Sex Friends
Relationships of friendship between individuals of different genders, characterized by mutual respect and non-romantic affection.
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