Ответ:
1) ax-cx=x(a-c)
2) (m-n)²+2•(m-n)=m²-2mn+n²+2m-2n
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Ответ:
1) ax-cx=x(a-c)
2) (m-n)²+2•(m-n)=m²-2mn+n²+2m-2n