i)Find and simplify the first four terms of the binomial expansion of (1 + 3x)6
ii) Hence find the coefficient of x2 in the expansion of (1 + 3x)6 (2 – 7x)
i)Find and simplify the first four terms of the binomial expansion of (1 + 3x)6
ii) Hence find the coefficient of x2 in the expansion of (1 + 3x)6 (2 – 7x)