4q(1-p)³+2(p-1)² =4q(1-p)³+2(1-p)²=2(1-p)²[2q(1-p）+1]=2(1-p)²(2q-2pq+1)a²-ab+ac-bc =(a²-ab)+(ac-bc)=a(a-b)+c(a-b)=(a-b)(a+c)4x²-12xy+9y²-25 =(2x-3y)&...