1、3.因式分解 xy62x3y(x-3)(y-2) 4.因式分解 x2(xy)y2(y x) (x+y)(x-y)2 5.因式分解 2x2(a2b)xab(2x-a)(x+b) 6.因式分解 a49a2b2 a2(a+3b)(a-3b) 8.因式分解 ab(x2y2)xy(a2b2)(ay+bx)(ax-by) 9.因式分解(xy)(abc)(xy)(b c a) 2y(a-b-c) 10.因式分解 a2a b2b(a+b)(a-b-1) 11.因式分解(3ab)24(3ab)(a3b) 4(a3b)23a-b-2(a+3b)2=(a-7b)2 12.因式分解(a 3)26(a3)(a+3)(a
2、-3) 13.因式分解(x1)2(x 2)(x1)(x 2)2-(x+1)(x+2) abcab4aa(bc+b-4) (2)16x281(4x+9)(4x-9) (3)9x230x25(3x-5)2 (4)x27x30(x-10)(x+3) 35.因式分解 x225(x+5)(x-5) 36.因式分解 x220x100(x-10)2 37.因式分解 x24x3(x+1)(x+3) 38.因式分解 4x212x5(2x-1)(2x-5) 39.因式分解下列各式： (1)3ax26ax 3ax(x-2) (2)x(x 2)xx(x+1) (3)x24xax4a(x-4)(x-a) (4)25x2
3、49(5x-9)(5x+9) (5)36x260x25(6x-5)2 (6)4x212x9(2x+3)2 (7)x29x18(x-3)(x-6) (8)2x25x3(x-3)(2x+1) (9)12x250x82(6x-1)(x-4) 40.因式分解(x2)(x 3)(x2)(x 4)(x+2)(2x-1) 41.因式分解 2ax23x2ax 3 (x+1)(2ax-3) 42.因式分解 9x266x121(3x-11)2 43.因式分解 82x22(2+x)(2-x) 44.因式分解 x2x14 整数内无法分解 45.因式分解 9x230x25(3x-5)2 46.因式分解20x29x20(
4、-4x+5)(5x+4) 47.因式分解 12x229x15(4x-3)(3x-5) 48.因式分解 36x239x93(3x+1)(4x+3) 49.因式分解 21x231x22(21x+11)(x-2) 50.因式分解 9x435x24(9x2+1)(x+2)(x-2) 51.因式分解(2x1)(x 1)(2x1)(x 3)2(x-1)(2x+1) 52.因式分解 2ax23x2ax 3(x+1)(2ax-3) 53.因式分解 x(y2)xy1(x-1)(y+1) 54.因式分解(x23x)(x 3)2 (x-3)(2x-3) 55.因式分解 9x266x121(3x-11)2 56.因式
5、分解 82x22(2-x)(2+x) 57.因式分解 x41(x-1)(x+1)(x2+1) 58.因式分解 x24xxy2y4(x+2)(x-y+2) 59.因式分解 4x212x5(2x-1)(2x-5) 60.因式分解 21x231x22(21x+11)(x-2) 61.因式分解 4x24xyy24x2y3(2x+y-3)(2x+y+1) 62.因式分解 9x535x34xx(9x2+1)(x+2)(x-2) 63.因式分解下列各式： (1)3x26x3x(x-2) (2)49x225(7x+5)(7x-5) (3)6x213x5(2x-1)(3x-5) (4)x223x(x-1)(x-2) (5)12x223x24(3x-8)(4x+3) (6)(x6)(x6)(x 6)(x-6)(x+5) (7)3(x 2)(x5)(x 2)(x3)2(x-6)(x+2) (8)9x242x49(3x+7)2 。
