0.5x+x²-1.5x³= x(0.5+x-1.5x²)
a²b-2a³b²+3ab³-ab²= ab(a-2a²b+3b²-b)
-m²x+4mx²+3m³= m(-mx+4x²+3m²)
0.7x³-1.4²+2.1x-2.8x⁴= 0.7(x³-2²+3x-4x⁴)
0.5x+x²-1.5x³= x(0.5+x-1.5x²)
a²b-2a³b²+3ab³-ab²= ab(a-2a²b+3b²-b)
-m²x+4mx²+3m³= m(-mx+4x²+3m²)
0.7x³-1.4²+2.1x-2.8x⁴= 0.7(x³-2²+3x-4x⁴)