Find the first three terms, in ascending powers of x, of the binomial expansion of (3 + 2x)^5, giving each term in its simplest form.
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So, we will calculate the terms for $k = 0, 1, 2$. For $k = 0$: $\binom{n}{0} a^n b^0 = \binom{n}{0} (3)^n (2x)^0 = 1 \cdot 3^n \cdot 1 = 3^n$ Show more…
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