What is 8(5x-9) simplified using the distributive property?

To simplify ( 8(5x - 9) ) using the distributive property, you multiply each term inside the parentheses by 8. This gives you ( 8 \times 5x - 8 \times 9 ), which simplifies to ( 40x - 72 ). Thus, the expression simplified is ( 40x - 72 ).