1.（2x³）²-x³【x³-x(2x²-1）】=4x^6-x^6+x^4(2x²-1)=x^6-2x^6+x^4=-x^6+x^42.[ab(1-b)-2a(b-1\2的b²次方]×（-2ab）² =(ab-ab²-2ab+ab²)(4a²b²)=-ab(...