4(x+y)²-12(x+y)+9 x²+2x(y-x)+(z-y)² 因式分解,答了我会采纳的!
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 19:07:01
![4(x+y)²-12(x+y)+9 x²+2x(y-x)+(z-y)² 因式分解,答了我会采纳的!](/uploads/image/z/1644544-64-4.jpg?t=4%28x%2By%29%26%23178%3B-12%28x%2By%29%2B9+x%26%23178%3B%2B2x%28y-x%29%2B%28z-y%29%26%23178%3B+++++++++++++++++++++++++++++++++++++%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%2C%E7%AD%94%E4%BA%86%E6%88%91%E4%BC%9A%E9%87%87%E7%BA%B3%E7%9A%84%21)
4(x+y)²-12(x+y)+9 x²+2x(y-x)+(z-y)² 因式分解,答了我会采纳的!
4(x+y)²-12(x+y)+9 x²+2x(y-x)+(z-y)² 因式分解,答了我会采纳的!
4(x+y)²-12(x+y)+9 x²+2x(y-x)+(z-y)² 因式分解,答了我会采纳的!
4(x+y)^2--12(x+y)+9=[2(x+y)--3]^2
=(2x+2y--3)^2.
x^2+2x(y--x)+(x--y)^2
=[x+(y--z)]^2
=(x+y--z)^2.