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Find 50 math factorization and simplification evaluation questions in the second volume of the second day of junior high school! !
Factorization:

1.x? -25=

2.x? -20x+ 100=

3.x? +4x+3=

4.4x? - 12x+5=

5.3ax? -6ax=

6.x(x+2)-x=

7.x? -4x-ax+4a=

8.25x? -49=

9.36x? -60x+25=

10.4x? + 12x+9=

1 1.x? -9x+ 18=

12.2x? -5x-3=

13. 12x? -50x+8=

14.(x+2)(x-3)+(x+2)(x+4)= 1

15.2ax? -3x+2ax-3=

16.9x? -66x+ 12 1=

17.8-2x? =

18.x? -x+ 14 =

19.9x? -30x+25=

20.-20 times +9x+20=

2 1. 12x? -29x+ 15=

22.36x? +39x+9=

23.2 1x? -3 1x-22=

24.9x4-35x? -4=

25.(2x+ 1)(x+ 1)+(2x+ 1)(x-3)= 1

26.2ax? -3x+2ax-3=

27.x(y+2)-x-y- 1=

28.(x? -3x)+(x-3)2=

29.9x? -66x+ 12 1=

30.8-2x? =

3 1.x4- 1=

32.x? +4x-xy-2y+4=

33.4x? - 12x+5=

34.2 1x? -3 1x-22=

35.4x? +4xy+y2-4x-2y-3=

36.9x5-35x3-4x=

37.3x? -6x=

38.49x? -25=

39.6x? - 13x+5=

40.x? +2-3 times =

4 1. 12x? -23x-24=

42.(x+6)(x-6)-(x-6)= 1

43.3(x+2)(x-5)-(x+2)(x-3)= 1

44.9x? +42x+49=

45.(x+2)-2(x+2)2=

46.36x? +39x+9=

47.2 times? +ax-6x-3a=

48.22x? -3 1x-2 1=

49.3ax? -6ax=

50.(x+ 1)x-5x=

5 1.(2x+ 1)(x-3)-(2x+ 1)(x-5)= 1

52.xy+2x-5y- 10=

53.x2y2-x? -Really? -6xy+4=

54.8x2- 18

55.x2-(a-b)x-ab

56.9x4+35x2-4

57.x2-y2-2yz-z2

58.a(b2-c2)-c(a2-b2)

59.(2x+ 1)(x+ 1)+(2x+ 1)(x-3)

60.39x2-38x+8

6 1 7(x- 1)2+4(x- 1)(y+2)-20(y+2)2

62.xy2-2xy-3x-y2-2y- 1

63.4x2-6ax+ 18a2

64.20a3bc-9a2b2c-20ab3c

65.2ax2-5x+2ax-5

66.4x 3+4x 2-25-25

67.( 1-xy)2-(y-x)2

68.mx2-m2-x+ 1

69.a2-2ab+b2- 1

70.5x2-45

7 1.8 1x3-9x

72.x2-y2-5x-5y

73.x2-y2+2yz-z2

74.xy2-2xy-3x-y2-2y- 1

75.y2(x-y)+z2(y-x)