化简4y×2x+2×2y+y×x,

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化简4y×2x+2×2y+y×x,
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化简4y×2x+2×2y+y×x,
化简4y×2x+2×2y+y×x,

化简4y×2x+2×2y+y×x,
4y×2x+2×2y+y×x
=8xy+4y+xy
=9xy+4y