els that are the same 6x 2 2 6x 1 a Show that when x 3 Arun s answer is incorrect Explain why his method is incorrect f Discuss your answers to parts a to e with other learners in How will you convince them about your findings if your ans Simplify these expressions Make sure you factorise the numerator before you cancel with the denominator 6x 3 b 5x 10 3 5 Show that 6x 4 20x 25 simplifies to 7x 3 C 6x 9 3 d 8x 20 4