1.If the constant term in the binomial expansion of (x−kx2)10\left(\sqrt{x} - \frac{k}{x^{2}}\right)^{10}(x−x2k)10 is 405405405, then ∣k∣|k|∣k∣ equals:a.999b.111c.333d.222Login to continueOnly logged in users canattempt or see the solution.
