x(y-z)-y(z-x)+z(x-y)=?------化简求值：1/16[(-2)^3a^2]^2*a^3*(-a)^5,其中a=-11/3a^b^n+(3a^3b^2-6ab+27b^n)

Question

x(y-z)-y(z-x)+z(x-y)=?------化简求值：1/16[(-2)^3 a^2]^2*a^3*(-a)^5,其中a=-1
1/3a^b^n+(3a^3b^2-6ab+27b^n)

Answer 1

x(y-z)-y(z-x)+z(x-y)=2xy-2yz+2yz
x(y-z)+y(z-x)+z(x-y)=0
1/16[(-2)^3 a^2]^2*a^3*(-a)^5=-4a^12=-4