In the expression \( 5(g+2) + 3(h-4) \), you should apply the distributive property first. This property allows you to multiply a single term by each term in the parentheses.
So, you would first distribute \( 5 \) to \( (g+2) \) and \( 3 \) to \( (h-4) \):
- \( 5(g+2) = 5g + 10 \)
- \( 3(h-4) = 3h - 12 \)
Thus, the correct answer is distributive property.