1. The question asks where to apply the term $8x$ in an expression or equation. 2. Typically, $8x$ is a term in an algebraic expression or equation and should be combined with like terms or used according to the operation given (addition, subtraction, multiplication, etc.). 3. For example, if you have an expression like $3x + 8x$, you combine the like terms by adding the coefficients: $$3x + 8x = (3 + 8)x = 11x.$$ 4. If $8x$ is multiplied by another term, say $2$, then you apply multiplication: $$8x \times 2 = 16x.$$ 5. Without a specific expression or equation, the general rule is to apply $8x$ according to the operation indicated and combine it with like terms if possible. 6. If you provide the full expression or equation, I can show exactly how to apply $8x$.