x^2.x^4.x^6+(x^3)^3.x^3+[(-x)^4]^3
=x^(2+4+6)+x^9.x^3+(x^4)^3
=x^12+x^12+x^12
=3x^12x^3n-1.x^2-n=x^n+2,则n=,如果4^2.8^n.16=2^14则n=这是另一个题啊
采纳我，重新问