erzhan9210 1) m^6-m⁴+2m³+2m² = m⁴(m²-1)+2m²(m+1) = m⁴(m-1)(m+1)+2m²(m+1) = (m+1)(m⁴(m-1)+2m²) = (m+1)(m^5-m⁴+2m²)

2) b³-8+6b²-12b = (b-2)(b²+2b+4)+6b(b-2) = (b-2)(b²+2b+4+6b) = (b-2)(b²+8b+4)