Question

Desenvolva o binômio (2x - 1)^4

Answer 1

$(2x - 1)^4 = \sum_{p\: = \: 0}^{4} \binom{4}{p} = \binom{4}{0}.(2x)^4 + \binom{4}{1}.(2x)^3.(- 1) + \binom{4}{2}.(2x)^2.(- 1)^2 + \\ \binom{4}{3}.2x.(- 1)^3 + \binom{4}{4}.(- 1)^4 \\ \\ (2x - 1)^4 = 16x^4 - 32x^3 + 24x^2 - 8x + 1$