1）x³-3x²+4 =x³+x²-4x²+4=x²(x+1)-4(x-1)(x+1)=(x+1)(x²-4x+4)=(x+1)(x-2)²2）x³-3/4x-1/4=1/4(4x³-3x-1)=1/4(4x³-4x+x-1)=1/4[4x(x+1)(x-1)+(x-1)]=1/4(x...