A sign is being painted that includes three small squares with a side length of sand two large ones with a side length of S. write an expression to find the total area of the sign that needs to be painted

The total area that needs to be painted on the sign can be found by adding up the areas of all the squares.

The area of a square can be calculated by using the formula A = s^2, where s is the side length of the square.

For the three small squares with a side length of s, the total area to be painted is:
3*(s^2)

For the two large squares with a side length of S, the total area to be painted is:
2*(S^2)

Therefore, the expression to find the total area of the sign that needs to be painted is:
3*(s^2) + 2*(S^2)