2a²b-8ab+8b,m²（x-y)+n²（y-x)因式分解要有过程

2a²b-8ab+8b,m²（x-y)+n²（y-x)因式分解要有过程
2a²b-8ab+8b,m²（x-y)+n²（y-x)因式分解要有过程

2a²b-8ab+8b,m²（x-y)+n²（y-x)因式分解要有过程
2a²b-8ab+8b
=2b(a²-4a+4)
=2b(a-2)²
m²(x-y)+n²(y-x)
=m²(x-y)-n²(x-y)
=(x-y)(m²-n²)
=(x-y)(m+n)(m-n)
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