用提公因式法分解因式,数学好的进1.2a^2b-8ab^22.5(x-y)-6mn(x-y)3.a(x-3)+2b(3-x)4.5(y-x)^3+10(x-y)^2

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用提公因式法分解因式,数学好的进1.2a^2b-8ab^22.5(x-y)-6mn(x-y)3.a(x-3)+2b(3-x)4.5(y-x)^3+10(x-y)^2
用提公因式法分解因式,数学好的进
1.2a^2b-8ab^2
2.5(x-y)-6mn(x-y)
3.a(x-3)+2b(3-x)
4.5(y-x)^3+10(x-y)^2

用提公因式法分解因式,数学好的进1.2a^2b-8ab^22.5(x-y)-6mn(x-y)3.a(x-3)+2b(3-x)4.5(y-x)^3+10(x-y)^2
1 2a²b-8ab²
=2ab(a-4b)
2 5(x-y)-6mn(x-y)
=(x-y)(5-6mn)
3 a(x-3)+2b(3-x)
=(x-3)(a-2b
4 5(y-x)³+10(x-y)²
=(y-x)²(5y-5x+2)