The sum of the coefficients in the expansion of $(1 + x - 3x^2)^{2163}$ will be

Find the value of $(a^{2}+\sqrt{a^{2}-1})^{4}+(a^{2}-\sqrt{a^{2}-1})^{4}$.

If $(2+\sqrt{3})^{49}+(\sqrt{3}-2)^{49}=a+b \sqrt{3}$,where $a, b \in \mathbb{Q}$,then

If the sum of all the coefficients of $(\alpha x^2 - 2x + 1)^{2019}$ is equal to the sum of all the coefficients of $(x - \alpha y)^{2019}$,then $\alpha = $

In the expansion of $(1 + x + x^3 + x^4)^{10}$,the coefficient of $x^4$ is

The last two digits of the number $3^{400}$ are: