1. Find the expansion of (2y - 3x2)6. [7 marks] 2. Find the coefficient of x in the expansion of (x4 + 4) [2 marks) 3. Find the term in a$ b*in the expansion of ( a - ")". [2 marks)4. Find the term in the expansion of (2 - 3x) (1 + 2x) up to the term including x2. [4 marks]