x/2=y/3=z/4,则x²-2y²+3z²/xy+2yz+3xz的值是——要过程啊快快快快快快快

x/2=y/3=z/4,则x²-2y²+3z²/xy+2yz+3xz的值是——要过程啊快快快快快快快
x/2=y/3=z/4,则x²-2y²+3z²/xy+2yz+3xz的值是——要过程啊快快快快快快快

x/2=y/3=z/4,则x²-2y²+3z²/xy+2yz+3xz的值是——要过程啊快快快快快快快
由x/2=y/3=z/4,得y=3x/2,z=2x
x²-2y²+3z²/xy+2yz+3xz=17x²+8