The sum of coefficients of integral powers of $x$ in the binomial expansion of $(1 - 2\sqrt{x})^{50}$ is: (1) $\frac{1}{2}(3^{50} + 1)$ (2) $\frac{1}{2}(3^{50})$ (3) $\frac{1}{2}(3^{50} - 1)$ (4) $\frac{1}{2}(2^{50} + 1)$
The sum of coefficients of integral powers of $x$ in the binomial expansion of $(1 - 2\sqrt{x})^{50}$ is:\\
(1) $\frac{1}{2}(3^{50} + 1)$\\
(2) $\frac{1}{2}(3^{50})$\\
(3) $\frac{1}{2}(3^{50} - 1)$\\
(4) $\frac{1}{2}(2^{50} + 1)$