1. To explain why the numbers 4 and 2 appear in step 5, we need to look at the problem context where these values come from. 2. Usually, 4 and 2 could be coefficients or constants from an equation or expression that was simplified or factored. 3. For example, if you had an equation like $$2x + 4 = 0$$ and then in step 5 you started manipulating terms, the 4 and 2 are directly from that original equation. 4. Another common scenario is if we factored an expression like $$4x^2 - 2x$$, where 4 and 2 are factors or coefficients used in further simplification. 5. To give you accurate reasoning, could you please share the exact problem or steps before step 5? That way, I can explain exactly why 4 and 2 appear.