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1、(2x3)2(2x3)(2x3)23.(x+2)(x+2y-1)224.(2x+3)(3x+2)-6x(x+3)(a1)a(a1)1(a-2b)(a+2b)-(a-2b)2+8b225.53222a2aa5ba3abab2(mn)2n(mn)26.(a+1)(a-1)-(a-2)2(a3)(a1)a(a2)27.2a(a+2b)-(a+2b)228.(2x+3)2-(2x+3)(2x-3)1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.(a2b)a2b(a2b)22ab28a2b22ab,2/232323(a)aaaa29.1x
2、2yxyxy因式分解2(2xy)(xy)(xy)5x(xy)2x5x1x230.x2yy31.x22x332(2a-a)2a32.2x24xa(a3b)+(a+b)2-a(ab)33./y-y3622x2x1(x+1)(x1)(x2)22ababba2bb34.x39x63、2x25x12(a+b)(ab)+2b235.a34a64、c23xxy2y2223a(a+2a+1)2(a+1)36.a2+3a65、2x2213xy15y2cx(x+2y)(x+1)+2x37.44xy66、x32x28xx(x2)+(x+1)238.a3bab367、(x1)(x2)1222x12x1x3239.6xy29x2yy3(1a)(1a)a(a2)40.2x34H+2x2(xy)+3y41.(2a+1)2a2(x+2)(x-3)42.223ax-6axy+3ay=(3x-1)(2x+1)43.a2+4a+444.m2n-2mn+n45.2x2+3x(x-3)-946.(a-b)2-(b-a)47.4a24a148.168(xy)(xy)249.4x150.(a21)24a251.2ab22a2b52.(x2)(x4)x;2453.2x2x861、X22x354.2aab6b260、X24x355.2x23x1259、X3x256.2x5x658、2x24x257.2xx658.59.