m³+2m²=m+m² m(m²+m)+m²拆开后应为m³+m²+²吧?
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m³+2m²=m+m²m(m²+m)+m²拆开后应为m³+m²+²吧?m³+2m²=m+m²
m³+2m²=m+m² m(m²+m)+m²拆开后应为m³+m²+²吧?
m³+2m²=m+m² m(m²+m)+m²拆开后应为m³+m²+²吧?
m³+2m²=m+m² m(m²+m)+m²拆开后应为m³+m²+²吧?
对啊
m(m²+m)+m²
=m³+m²+m²
合并同类项
=m³+2m²