是不是m的立方+2m的平方+2010,是加2010还是乘
如果是+ ,将m代入方程得:
m²=1-m
那么:m³+2m²+2010
=m²·m+2(1-m)+2010
=(1-m)m+2-2m+2010
=m-m²+2-2m+2010
=m-(1-m)+2-2m+2010
=m-1+m+2-2m+2010
=2011
如果是乘
那么:m³+2m²×2010
=m²·m+2(1-m)×2010
=(1-m)m+2-2m×2010
=m-m²+2-2m×2010
=m-(1-m)+2-2m×2010
=m-1+m+2-2m×2010
=-4020m+1