(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!