|3x-6|+(3x²-4xy+3y+6)²=0,求2x²+8xy-6y+1的值.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 05:30:51
![|3x-6|+(3x²-4xy+3y+6)²=0,求2x²+8xy-6y+1的值.](/uploads/image/z/3850994-2-4.jpg?t=%7C3x-6%7C%2B%283x%26%23178%3B-4xy%2B3y%2B6%29%26%23178%3B%3D0%2C%E6%B1%822x%26%23178%3B%2B8xy-6y%2B1%E7%9A%84%E5%80%BC.)
|3x-6|+(3x²-4xy+3y+6)²=0,求2x²+8xy-6y+1的值.
|3x-6|+(3x²-4xy+3y+6)²=0,求2x²+8xy-6y+1的值.
|3x-6|+(3x²-4xy+3y+6)²=0,求2x²+8xy-6y+1的值.
|3x-6|+(3x²-4xy+3y+6)²=0,求2x²+8xy-6y+1的值
3x-6=0,故x=2;3x²-4xy+3y+6=12-8y+3y+6=-5y+18=0,故y=18/5.
∴2x²+8xy-6y+1=8+(288/5)-(108/5)+1=8+36+1=45