. (2a+3b)(a-2b)-(3a=2b)(2b-a) 2.4m squared +8m+4 3. (x squared +4) squared +8x(x squared +4)+ 16x squared) 4. It is known that (a+2b) finds the square of (a+b) in 2006, the square of 5.9a -4b+the square of 4bc, the cube of 6.8a, and the cube of c -65438 +0 factorization 3a3b2c-6a2bc2+9ab2c3 = 3ab2c (A2-2ac+3c2) 3. 4. Factorize x2 (x-y)+y2 (y-x) = (x+y) (x-y) 2 5. Factorization 2x2-(a-2b)x-ab=(2x-a)(x+b) 6. Factorization a4-9a2b2 = factorization x3+3x2-4 = (x- 1) (x+2) 28. Factorization ab (x2-y2)+xy (a2-B2) = (ay+bx) (ax-by) 9. Factorization (X+Y) (A-B). (a-b- 1) 1 1。 Factorization (3a-b) 2-4 (3a-b) (a+3b)+4 (a+3b) 2 = [3a-b-2 (a+3b)] 213. Factorization (x+1) 2 (x+2)-(x+1) 2 =-(x+1) (x+2) ABC+ab-4a = a (. 2(4)x2-7x-30 =(x- 10)(x+3)35。 Factorization x2-25=(x+5)(x-5) 36. Factorization x2-20x+ 100 = (x-) 38. Factorization 4x2-12x+5 = (2x-1) (2x-5) 39. Factorization includes the following categories: (1) 3ax2-6ax = 3ax (x-2) (2) x (x+2). 25 x2-49 =(5x-9)(5x+9)(5)36x2-60x+25=(6x-5)^2(6)4x2+ 12x+9=(2x+3)^2(7)x2-9x+ 18 =(x-3)(x-6)(8)2x 2-5x-3 =(x-3)(2x+ 1)(9) 12x 2-50x+8 = 2(6x- 1)(x-4)40。 Factorization (x+2) (x-3)+(x+2) (x+4) = (x+2) (2x-65433) 42. Factorizing 9x2-66x+121= (3x-11) 243. Factorization 8-2x2=2(2+x)(2-x) 44. Factorization X2-x+. 2 46. Factorization -20x2+9x+20=(-4x+5)(5x+4) 47. Factorization12x2-29x+15 = (4x-3) (3x-5) 48. Factorizing 36x2+. 49. Factorization 21x 2-31x-22 = (21x+1) (x-2) 50. Factorization 9x4-35x2-4 = (9x2+65438). +(2x+ 1)(x-3)= 2(x- 1)(2x+ 1)52。 Factorization 2ax2-3x+2ax-3 = (x+1) (2ax-3). +(x-3)2=(x-3)(2x-3) 55。 Factorizing 9x2-66x+121= (3x-11) 256. Factorization 8-2x2 = 2. (x 2+ 1) 58。 Factorization x2+4x-xy-2y+4=(x+2)(x-y+2) 59. Factorization 4x2-12x+5 = (2x-1) (2x (x-2) 61. Factorization 4x2+4xy+y2-4x-2y-3 = (2x+y-3) (2x+y+1) 62. Factorization 9X5-35x3-4x = x (9x2+) (2) 49x2-25 = (7x+5) (7x-5) (3) 6x2-13x+5 = (2x-1) (3x-5

The 2 after x is square, that is to say, for example, X2 is the square of x.