问题描述:
[(x+2y)的平方-(x+y)(x-y)-5y的平方]除以(2x)
[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以(4x)
[(2x+y)的平方-(-y+2x)(y+2x)]除以(2y)
help me!!!!!
[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以(4x)
[(2x+y)的平方-(-y+2x)(y+2x)]除以(2y)
help me!!!!!
问题解答:
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