m³-2m²-4m+8因式分解,

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m³-2m²-4m+8因式分解,

m³-2m²-4m+8因式分解,
m³-2m²-4m+8因式分解,

m³-2m²-4m+8因式分解,
m³-2m²-4m+8
=(m³-2m²)-(4m-8)
=m²(m-2)-4(m-2)
=(m²-4)(m-2)
=(m+2)(m-2)(m-2)
=(m+2)(m-2)²