The expression you provided is:
$$\frac{(0.5625)^2-(0.4375)^2}{0.04}$$
To evaluate this expression, we can use the following steps:
1. Compute the values inside the parentheses first:
$$(0.5625)^2=0.31640625$$
$$(0.4375)^2=0.19140625$$
2. Subtract the second value from the first:
$$0.31640625-0.19140625=0.125$$
3. Divide the result by 0.04:
$$\frac{0.125}{0.04}=3.125$$
Therefore, the value of the expression is 3.125.