Объяснение:
1. 6xy - 12x²y + 15x²y = 3xy(2 - 4x + 5)
2. 7mn^5 + 28m²n³ - 7m³n² = 7mn²(n³ + 4mn - 7m²)
3. a(x-2)+3b(x-2)-2(2-x)= (x-2)(a+3b+2)
4. 8(m-1)²-n(1-m)= 8(m-1)²+n(m-1)=(m-1)²(8+n)
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Объяснение:
1. 6xy - 12x²y + 15x²y = 3xy(2 - 4x + 5)
2. 7mn^5 + 28m²n³ - 7m³n² = 7mn²(n³ + 4mn - 7m²)
3. a(x-2)+3b(x-2)-2(2-x)= (x-2)(a+3b+2)
4. 8(m-1)²-n(1-m)= 8(m-1)²+n(m-1)=(m-1)²(8+n)