Question: value(s) of n. Let n be a positive integer. In the expansion of (1 + 2x)(1 -3x), the coefficient of x- is 25. (a) Find

value(s) of n. Let n be a positive integer. In the expansion of (1 + 2x)"(1 -3x), the coefficient of x- is 25. (a) Find the value of n. (b) Find the coefficient of x in the expansion. owers of x. whe

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