若m^2-2m=1,则2m^2-4m+2008=______
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若m^2-2m=1,则2m^2-4m+2008=______若m^2-2m=1,则2m^2-4m+2008=______若m^2-2m=1,则2m^2-4m+2008=______m²-2m
若m^2-2m=1,则2m^2-4m+2008=______
若m^2-2m=1,则2m^2-4m+2008=______
若m^2-2m=1,则2m^2-4m+2008=______
m² - 2m = 1
2m² - 4m = 2
2m² - 4m + 2008 = 2010
2m^2-4m+2008=2(m^2-2m)+2008
=2+2008=2010
2010吗?!
2m^2-4m+2008
=2(m^2-2m)+2008
=2×1+2008
=2010
【答案】 2010
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