(a-d)*(b-c)

The expression \((a-d)(b-c)\) represents the product of two binomials. To expand this expression, you can apply the distributive property (also known as the FOIL method for binomials). Here's how you can expand it: \[ (a-d)(b-c) = a(b) + a(-c) + (-d)(b) + (-d)(-c) \] Now, combine the like terms: \[ = ab - ac - db + dc \] So, the expanded form of \((a-d)(b-c)\) is: \[ ab - ac - db + dc \] Feel free to ask if you have any questions or need further assistance!