Question

求解下面两道初中因式分解 要详细过程谢谢了.!!!

第一题m立方—2m²—4m+8m
X ²—2xy +y ²—9
由于没找到立方符号 所以用中文代替了
谢谢各位了
忘打第二题题号了 第二排是第二题

Answer 1

解:如果是 m³-2m²-4m+8m
则 =m³-2m²+4m
=m(m²-2m+4)
如果是m³-2m²-4m+8
则=m²(m-2)-4(m-2)
=(m-2)(m²-4)
=(m-2)²(m+2)

X ²-2xy +y ²-9
=(x-y)²-9
=(x-y+3)(x-y-3)
祝你学习进步,如有不明可以追问.同意我的答案请采纳,O(∩_∩)O谢谢

追问

谢谢啊

Answer 2

m立方—2m²—4m+8
=m²(m-2)-4(m-2)
=(m-2)(m²-4)
=(m-2)²(m+2)

X ²—2xy +y ²—9
=(x-y)²-9
=(x-y+3)(x-y-3)

Answer 3

m³-2m²-4m+8
=m²(m-2)-4(m-2)
=(m-2)(m²-4)
=(m-2)(m-2)(m+2)
=(m-2)²(m+2)

x²-2xy +y ²-9
=(x-y)²-9
=(x-y)²-3²
=(x-y+3)(x-y-3)

Answer 4