1. Let's clarify the problem: You are asking why a certain value is not equal to -4. 2. To answer this, I need to know the exact expression or equation you are referring to. 3. Without the specific problem, I can explain a common scenario: If you solve an equation and get a value, it might not be -4 because of the operations involved or the domain restrictions. 4. For example, if you solve $x + 5 = 1$, subtracting 5 from both sides gives: $$x + 5 - \cancel{5} = 1 - \cancel{5}$$ $$x = -4$$ 5. But if the problem involves squares or absolute values, the solution might differ. 6. Please provide the exact equation or expression for a precise explanation.