This math topic centers on the practice of variable substitution in algebraic functions, specifically focusing on simple squared terms that include negative variables. It delves into calculating the values of algebraic expressions with squared variables and negative coefficients once certain values are substituted for the variables. Each question presents an expression with a specific variable set to a negative number, and students are asked to solve for the resultant value. This encompasses a range of problems designed to strengthen students' understanding of algebra basics at an advanced level, enhancing their ability to manipulate and evaluate expressions under given conditions.
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What is the value of this equation when x=-4