①﹙χ²-2y²-z²﹚-﹙﹣y²+3χ²-z²﹚+﹙5χ²-y²+2z²﹚=?②﹣﹛2a²b-[3abc-﹙4ab²-a²b﹚]﹜=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/23 19:57:26
![①﹙χ²-2y²-z²﹚-﹙﹣y²+3χ²-z²﹚+﹙5χ²-y²+2z²﹚=?②﹣﹛2a²b-[3abc-﹙4ab²-a²b﹚]﹜=?](/uploads/image/z/6851942-62-2.jpg?t=%E2%91%A0%EF%B9%99%CF%87%26%23178%3B%EF%BC%8D2y%26%23178%3B%EF%BC%8Dz%26%23178%3B%EF%B9%9A%EF%BC%8D%EF%B9%99%EF%B9%A3y%26%23178%3B%EF%BC%8B3%CF%87%26%23178%3B%EF%BC%8Dz%26%23178%3B%EF%B9%9A%EF%BC%8B%EF%B9%995%CF%87%26%23178%3B%EF%BC%8Dy%26%23178%3B%EF%BC%8B2z%26%23178%3B%EF%B9%9A%3D%3F%E2%91%A1%EF%B9%A3%EF%B9%9B2a%26%23178%3Bb%EF%BC%8D%5B3abc%EF%BC%8D%EF%B9%994ab%26%23178%3B%EF%BC%8Da%26%23178%3Bb%EF%B9%9A%5D%EF%B9%9C%EF%BC%9D%3F)
①﹙χ²-2y²-z²﹚-﹙﹣y²+3χ²-z²﹚+﹙5χ²-y²+2z²﹚=?②﹣﹛2a²b-[3abc-﹙4ab²-a²b﹚]﹜=?
①﹙χ²-2y²-z²﹚-﹙﹣y²+3χ²-z²﹚+﹙5χ²-y²+2z²﹚=?
②﹣﹛2a²b-[3abc-﹙4ab²-a²b﹚]﹜=?
①﹙χ²-2y²-z²﹚-﹙﹣y²+3χ²-z²﹚+﹙5χ²-y²+2z²﹚=?②﹣﹛2a²b-[3abc-﹙4ab²-a²b﹚]﹜=?
1 3x方-2y方+2z方