Question

[根号X-3根号X分之1]的10次方.

Answer 1

[根号X-3根号X分之1]的10次方=（x^(1/2)-x(-1/3))^10

显然它的通项是C(10,i)*x^(1/2*i)*x(-1/3*(10-i))

常数项即为1/2*i+(-1/3)*(10-i)=0 =>i=4

=>展开式中的常数项=C(10,4)=210