(x+y)(x²-xy+y²) xy —————————-————其中:x=5,y=(x+y)(x²-xy+y²) xy—————————-————其中:x=5,y=-3 x²-y² x-y (“—
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 14:22:36
![(x+y)(x²-xy+y²) xy —————————-————其中:x=5,y=(x+y)(x²-xy+y²) xy—————————-————其中:x=5,y=-3 x²-y² x-y (“—](/uploads/image/z/2668675-67-5.jpg?t=%28x%2By%29%28x%26%23178%3B-xy%2By%26%23178%3B%29+xy+%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94-%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E5%85%B6%E4%B8%AD%3Ax%3D5%2Cy%3D%28x%2By%29%28x%26%23178%3B-xy%2By%26%23178%3B%29++++++++xy%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94-%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E5%85%B6%E4%B8%AD%3Ax%3D5%2Cy%3D-3++++++++++++++++++++++x%26%23178%3B-y%26%23178%3B++++++++++++++++++x-y+++++++++++%28%E2%80%9C%E2%80%94)
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