What would the formula =B1+B2 return?

The formula =B1+B2 performs a simple arithmetic operation in spreadsheet software. It takes the values contained in cells B1 and B2 and calculates their total by adding them together. This means that if B1 contains a number, say 3, and B2 contains a number, say 5, the formula would return 8, which is the sum of 3 and 5. Thus, this formula directly provides the sum of the values in the specified cells, making it a straightforward way to combine numeric data in a spreadsheet.