Multiply and then simplify as much as possible. 2. (x+3)(x-3) 3. (a-6)(a+6) 4. (3x-10)(3x+10) 5. (x+5y)(x-5y) 6. What is similar about all of the results when you multiplied the binomials in problems #2 through #5? For this question, do not consider the initial expressions-describe only the final simplified results of those four problems. Be specific. 7. Is there any kind of shortcut that does not involve FOILing that can help you multiply when you are working with binomials like the ones in problems #2 through #5? Explain, and include a new example showing your shortcut alongside the FOIL method to demonstrate that it works.