1. Robert made the following rectangles using algebra tiles and wrote the expression 2(x + x - 12)
(representing BOTH rectangles)
x
x
x
-
-
-
-
-
-
-
-
-
-1
-1
-1
-1
-
-1
-1
-1
-1
a. How can he write the expression as a fully factored product?