若m²-5m+2=0,则2m²-10m+2012=?
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若m²-5m+2=0,则2m²-10m+2012=?
若m²-5m+2=0,则2m²-10m+2012=?
若m²-5m+2=0,则2m²-10m+2012=?
你把2012分解成4+2008 再与前面的等式套换 结果你就出来了吗 答案是2008