Noe sketches the design at the right. the small squares have side length a and the large squares have side length b. He writes the expression 2a² + 5ab + 2b² to describe the areas of his design. then he changes his mind and writes 35a².

What information is in the expression 2a² + 5ab + 2b² that is not in 35a²? What information is in the expression 35a²? What information is in the expression 35a² that is not in 2a² + 5ab + 2b