Answer:
First, we need to perform the operations inside the parentheses, following the order of operations:
5 x 10² = 500
Then we divide 500 by 2³, which equals 8:
500 ÷ 8 = 62.5
To express this in scientific notation, we need to move the decimal point to the left so that there is only one non-zero digit to the left of the decimal point. In this case, we need to move it three places to the left:
62.5 = 6.25 x 10¹
Therefore, the result of (5 x 10²) ÷ 2³ expressed in scientific notation is 6.25 x 10¹.