IB Algebra and Numbers Problem 002 Given that \(\left(1 + \frac{2}{3}\,x \right)^n(3 + nx)^2 = 9 + 84x + \ldots\), find the value of \(n\). Published 2026/05/21 Thursday, May 21 by Annie Bernatchez in «algebra and numbers». Key Words: IB, question