1.
The term independent of xx in the expansion of (x2/3+1x1/3)(xx1/2)(x+1x)10\left(x^{2/3} + \dfrac{1}{x^{1/3}}\right)\left(x - x^{1/2}\right)\left(x + \dfrac{1}{x}\right)^{10}, x>1x>1, is: