已知:m²-m+1=0 求m³-2m+2012
已知:m²-m+1=0 求m³-2m+2012
數(shù)學人氣:506 ℃時間:2020-04-02 22:49:47
優(yōu)質(zhì)解答
m²-m=-1,m³-2m+2012=m³-m²+m²-m-m+2012=m(m²-m)+(m²-m)-m+2012= -m-1-m+2012=2011-2m
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