(a)[3]
Find the first three terms of the expansion of $(3 - 2x)^5$ in ascending powers of $x$.
(b)[3]
Hence find the coefficient of $x^2$ in the expansion of $(4 + x)^2(3 - 2x)^5$.
Mathematics 9709 · AS & A Level · Series
Mathematics 9709 · AS & A Level · Series
Find the first three terms of the expansion of $(3 - 2x)^5$ in ascending powers of $x$.
Hence find the coefficient of $x^2$ in the expansion of $(4 + x)^2(3 - 2x)^5$.