Ответ:
1)x(a-b)+y(b-a)= x(a-b)-y(a-b)=(x-y)(a-b)
2)m²(a-2)+n(2-a)=m²(a-2)-n(a-2)=(m²-n)(a-2)
3)2m(x-y)-y+x=2m(x-y)+(x-y)=(2m+1)(x-y)
4)2n(x-y)-(y-x)=2n(x-y)+(x-y)=(2n+1)(x-y)
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Ответ:
1)x(a-b)+y(b-a)= x(a-b)-y(a-b)=(x-y)(a-b)
2)m²(a-2)+n(2-a)=m²(a-2)-n(a-2)=(m²-n)(a-2)
3)2m(x-y)-y+x=2m(x-y)+(x-y)=(2m+1)(x-y)
4)2n(x-y)-(y-x)=2n(x-y)+(x-y)=(2n+1)(x-y)