先化简,后计算!(x-1)(x-2)-3x(x+3)+2(x+2)+(x-1),其中x=1/3

(x-1)(x-2)-3x(x+3)+2(x+2)+[应该是乘号吧](x-1),其中x=1/3
(x-1)(x-2)-3x(x+3)+2(x+2)(x-1)
=(x-1)(x-2+2x+4)-3x(x+3)
=(x-1)(3x+2)-3x(x+3)
=3x^2-x-2-3x^2-9x
=-10x-2
=-10*(1/3)-2
=-16/3