作业帮已知p=a²+3ab+b²,q=a²-3ab+b²,化简：p-[q-2p-(-p+q)]
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 00:33:18
![已知p=a²+3ab+b²,q=a²-3ab+b²,化简：p-[q-2p-(-p+q)]](/uploads/image/z/1785941-53-1.jpg?t=%E5%B7%B2%E7%9F%A5p%3Da%26%23178%3B%2B3ab%2Bb%26%23178%3B%2Cq%3Da%26%23178%3B-3ab%2Bb%26%23178%3B%2C%E5%8C%96%E7%AE%80%EF%BC%9Ap-%5Bq-2p-%28-p%2Bq%29%5D)
已知p=a²+3ab+b²,q=a²-3ab+b²,化简：p-[q-2p-(-p+q)]
已知p=a²+3ab+b²,q=a²-3ab+b²,化简：p-[q-2p-(-p+q)]
已知p=a²+3ab+b²,q=a²-3ab+b²,化简：p-[q-2p-(-p+q)]
p-[q-2p-(-p+q)]
=p-[q-2p+p-q]
=p-(-p)
=2p
=2a²+6ab+2b²
p-[q-2p-(-p+q)]
＝p-q+2p-p+ q
＝2p
p=a²+3ab+b²
代入，得
原式＝2(a²+3ab+b²)