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
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/24 18:52:51
![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](/uploads/image/z/5218589-29-9.jpg?t=x%2F2%3Dy%2F3%3Dz%2F4%2C%E5%88%99x%26%23178%3B-2y%26%23178%3B%2B3z%26%23178%3B%2Fxy%2B2yz%2B3xz%E7%9A%84%E5%80%BC%E6%98%AF%E2%80%94%E2%80%94%E8%A6%81%E8%BF%87%E7%A8%8B%E5%95%8A%E5%BF%AB%E5%BF%AB%E5%BF%AB%E5%BF%AB%E5%BF%AB%E5%BF%AB%E5%BF%AB)
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