把下列各式分解因式(1)-x3y+2x2y-2xy(2)a2(x-1)+b2(1-x)(3)x2+4x-5(4)a2-b2+2a+1
解:(1)-x3y+2x2y-2xy=-xy(x2-2x+2);(2)a2(x-1)+b2(1-x)=(x-1)(a2-b2)=(x-1)(a+b)(a-b);(3)x2+4x-5=(x-1)(x+5);(4)a2-b2+2a+1=a2+
结合材料,分析浙江的成功经验对全面提高开放型经济水平有何启示。