初二因式分解练习题求50道因式分解题.包括10到公因式.15道十字相乘.20道运用公因式.5道分组分解.按类别给出来.谢

6个回答

  • 现出的:

    1.ax+by+ay+bx

    2.x^3+1

    3.x^2+x^3

    4.x^2+x^3-2

    5.x^2-6x+8

    6.x^2-12x+35

    7.(x^3-1)+(x-1)(6x+11)

    8.x^4-1

    9.x^4+4

    10.b^2+ab+ac+bc

    11.x^3+y^3+z^3-3xyz

    12.x^6+8x^3+9

    13.x^2-100x+99

    14.x^2-x-y^2-y

    15.7x^2-19x-6

    16.8x^2-6x-9

    17.x+1)(x+2)-12

    18.x^2+(p+q)x+pq

    19.3x^3-6x^2+3

    20.a^2(x-2a)^2-a(x-2a)^2

    21.25m^2-10mn+n^2

    22.x^2-3x-28

    23.y^4+2y^3-3y^2

    24.(x-1)^2*(3x-2)+(2-3x)

    25.(x-2)^2-x+2

    26.x^2-12x-28

    27.12a^2*b(x-y)-4ab(y-x)

    28.a^2+5a+6

    29.x^11-2x^10+x^9

    30.x^2+x

    31.x^3+x

    32.x^4+x

    33.100x^2+30xy+2y^2

    34.6y^2-16y+8

    35.6-7a-5a^2

    36.3x^2-17x+10

    37.6a^2-11ab+3b^2

    38.2m^3+3m^2-5m

    39.(x+y)^2-2(x+y)-3

    40.a^2-b^2+2ab-c^2

    41.m^2+2mn+n^2-1

    42.x^2-4y^2+4yz-z^2

    43.9x^2-4y^2-z^2+4yz

    44.-25+a^2+9b^2-6ab

    45.2x^2-100x-102

    46.x^2*y^2-7xy+10

    47.x^2-x-2

    48.-x^2*y+6xy-8y

    49.x^2-9y^2-x+3y

    50.x^2-7x-8

    出不动了.

    难度不随题号变化,解题方法不随题号变化,老少皆宜,童叟无欺.

    答案:

    1.(a+b)(x+y)

    2.(x+1)(x^2-x+1)

    3.x^2*(x+1)

    4.(x-1)(x^2-2x+2)

    5.(x-2)(x-4)

    6.(x-5)(x-7)

    7.(x-1)(x+3)(x+4)

    8.(x^2+1)(x-1)(x+1)

    9.(x^2-2x+2)(x^2+2x+x)

    10.(b+c)(b+a)

    11.(x+y+z)(x^2+y^2+z^2-xy-yz-xz)

    12.(x+1)(x^2-x+1)(x+2)(x^2-2x+4)

    13.(x-99)(x-1)

    14.(x+y)(x-y-1)

    15.(7x+2)(x-3)

    16.(2x-3)(4x+3)

    17.(x+5)(x-2)

    18.(x+p)(x+q)

    19.(x-1)(x^2-x-1)

    20.a(a-1)(x-2a)^2

    21.(5m-n)^2

    22.(x-7)(x+4)

    23.y^2(y-1)(y+3)

    24.x(x-2)(3x-2)

    25.(x-2)(x-3)

    26.(x-14)(x+2)

    27.4ab(3a+1)(x-y)

    28.(a+2)(a+3)

    29.x^9*(x-1)^2

    30.x(1+x)

    31.x(1+x^2)

    32.x(1+x)(1-x+x^2)

    33.2(5x+y)(10x+y)

    34.2(3y-2)(y-2)

    35.(3-5a)(a+2)

    36.(3x-2)(x-5)

    37.(2a-3b)(3a-b)

    38.m(m-1)(2m+5)

    39.(x+y-3)(x+y+1)

    40.(a+b-c)(a+b+c)

    41.(m+n+1)(m+n-1)

    42.(x+2y-z)(x-2y+z)

    43.(3x+2y-z)(3x-2y+z)

    44.(a-3b-5)(a-3b+5)

    45.2(x-51)(x+1)

    46.(xy-5)(xy-2)

    47.(x-2)(x+1)

    48.-y(x-2)(x-4)

    49.(x-y)(x+3y-1)

    50.(x-8)(x+1)