作业帮化简求值:2x²y-[x²y+2(xy²-xy)+y]+y,其中x²=2x+1,y=2011/20122x²y-[x²y+2(x²y-xy)+y]+y,其中x²=2x+1,y=2011/2012
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![化简求值:2x²y-[x²y+2(xy²-xy)+y]+y,其中x²=2x+1,y=2011/20122x²y-[x²y+2(x²y-xy)+y]+y,其中x²=2x+1,y=2011/2012](/uploads/image/z/2519227-19-7.jpg?t=%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%3A2x%26%23178%3By-%5Bx%26%23178%3By%2B2%28xy%26%23178%3B-xy%29%2By%5D%2By%2C%E5%85%B6%E4%B8%ADx%26%23178%3B%3D2x%2B1%2Cy%3D2011%2F20122x%26%23178%3By-%5Bx%26%23178%3By%2B2%28x%26%23178%3By-xy%29%2By%5D%2By%2C%E5%85%B6%E4%B8%ADx%26%23178%3B%3D2x%2B1%2Cy%3D2011%2F2012)
化简求值:2x²y-[x²y+2(xy²-xy)+y]+y,其中x²=2x+1,y=2011/20122x²y-[x²y+2(x²y-xy)+y]+y,其中x²=2x+1,y=2011/2012
化简求值:2x²y-[x²y+2(xy²-xy)+y]+y,其中x²=2x+1,y=2011/2012
2x²y-[x²y+2(x²y-xy)+y]+y,其中x²=2x+1,y=2011/2012
化简求值:2x²y-[x²y+2(xy²-xy)+y]+y,其中x²=2x+1,y=2011/20122x²y-[x²y+2(x²y-xy)+y]+y,其中x²=2x+1,y=2011/2012
题目有问题,请核查
2x²y-[x²y+2(x²y-xy)+y]+y
=2x²y-x²y-2x²y+2xy-y+y
=-x²y+2xy
=-(x²-2x)y
=-y
=-2011/2012