(1)-4m³+16m²-16m=-4m(m²-4m+4)=-4m(m-2)²（2）x³-2x²y+xy² =x(x²-2xy+y²)=x(x-y)² （3）（x²-3x）²-（3x-1）²=(x²-3x+3x-1)(x²-3x-3x...