The expression 5x2(52x3) can be simplified using the order of operations, which states that we should perform any calculations inside parentheses first. In this case, we have the expression 52x3 inside the parentheses. Multiplying 52 by 3 gives us 156. Next, we multiply this result by 5x2, which is equivalent to multiplying 156 by 10. Therefore, the simplified expression is 1560.