30题因式分解题 要有答案 不要应用题什么的要算术题加答案!

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30题因式分解题 要有答案 不要应用题什么的要算术题加答案!
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30题因式分解题 要有答案 不要应用题什么的要算术题加答案!
30题因式分解题 要有答案 不要应用题什么的要算术题加答案!

30题因式分解题 要有答案 不要应用题什么的要算术题加答案!
因式分解法
1.x^2-3x+2=0
2.2x^2-x-3=0
3.(x+2)^2+x+2=0
4.3x^2-27=0
1.
(x-1)(x-2)=0
x=1 或 x=2
2.
(2x-3)(x+1)=0
x=3/2 或 x=-1
3.
(x+2+1)(x+2)=0
x=-1 或 x=-2
4.
x^2-9=0
(x+3)(x-3)=0
x=-3 或 x=3
其他没过程有答案的:
x^2-34x-35=0
35 or -1
x^2-2-3=0
3 or -1
-x^2-9x-14=0
-2 or- 7
-x^2-10x-24=0
-4 or -6
x^2-5x-6=0
6 or -1
x^2-14x-32=0
16 or 2
x^2-3x-4=0
4 or -1
-x^2-4x+5=0
-5 or 1
x^2-20x-21=0
21 or -1
x^2+8x+7=0
1 or 7
-x^2-4x-4=0
-2
-x^2-6x-8=0
-2 or -4
x^2+7x+12=0
-3 or -4
-x^2-8x-15=0
-3 or -5
x^2-4x-32=0
8 or -4
x^2-6x-27=0
9 or -3
-x^2-9x+22=0
-11 or 2
x^2+12x-28=0
-14 or 2
-x^2-4x+21=0
-7 or 3
x^2-5x-36=0
9 or -4
x^2+12x-13=0
-13 or 1
-x^2-3x+54=0
-9 or 6
-x^2-x+90=0
-10 or 9
x^2-3x-88=0
11 or -8
x^2-5x-14=0
7 or -2
x^2-3x-10=0
5 or -2
-x^2+4x+12=0
6 or -2
x^2+7x-18=0
-9 or 2
x^2+9x-10=0
-10 or 1
-x^2-11x+26=0
-13 or 2
x^2-3x-40=0
8 or -5
-x^2-5x+36=0
-9 or 4
x^2-14x-15=0
15 or -1
-x^2+22x+23=0
23 or -1
x^2-5x-50=0
10 or -5
x^2-12x-64=0
16 or -4
x^2+3x+2=0
-1 or -2
3x^2-18x+24=0
2 or 4
x^2+6x+5=0
-1 or -5
-x^2+4x+12=0
6 or -2
x^2+12x-20=0
-10 or 2
-x^2-13x+40=0
-5 or -8
x^2-x-6=0
3 or -2
-x^2-11x-28=0
x^2+2x-3=0
-x^2+5x+6=0
6 or -1
-x^2-5x-6=0
-2 or -3
-x^2-16x-63=0
-7 or -9
x^2-2x-3=0
3 or -1
-x^2-5x+4=0
1 or 4
-x^2-8x-12=0
-2 or -6
x^2-5x-6=0
6 or -1
x^2-9x+18=0
3 or 6
-x^2-6x-8=0
-2 or -4
x^2-6x-16=0
8 or -2
x^2-12x+11=0
1 or 11
-x^2+4x+5=0
5 or -1
x^2-13x+22=0
2 or 11
x^2-34x+33=0
1 or 33
-x^2-2x-1=0
-1
x^2-x-2=0
2 or -1
x^2+7x+10=0
-2 or -5
x^2+8x-20=0
-10 or 2
还有一些没答案但是都能用因式分解法做的
X^2-X-6=0
2X^2-3X-2=0
-3X^2+6X=2
4X^2-4X+1=0
X^2-2X+3=0
-X^2-2X+8=0
X^2-X-2=4
2X^2-3X+1=0
-3X^2+4X+4=0
4X^2-11X-3=3
x^2-2x-3=0
4x^2-1=0
5x^2-3x+2=0
-x^2-2x+8=0
-2x2+x+3=0
2x^2+3x-9=0
x^2-9=0
4x^2-10x-6=0
5x^2-8x-4=0
3x^2+4x-4=0
6x^2+7x-5=0
x^2-8x+12=0
2x^2-6x+3=0
2x^2+9x-5=0
3x^2-16x+5=0
2x^2-11x+5=0
4x^2-16x+7=0
10x^2-9x-7=0
2x^2-13x-7=0
2x^2-3x-2=0
-2x^2+3x-1=0
2x^2-17x-9=0
2x^2-x-6=0
12x^2+16x-3=0
6x^2-13x+2=0
3x^2-7x+2=0
5x^2-11x+2=0
2x^2-9x+9=0
2x^2+3x-9=0
x^2+2x-3=0
x^2-6x+5=0
x^2-3x+2=0
x^2-12x+32=0
x^2+6x-16=0
3x^2-12x-15=0
2x^2-11x-21=0
2x^2-7x-15=0
-x^2+8x-12=0
6x^2-x-15=0
-6x^2-7x+2=0
2x^2-x-6=0
x^2+x-6=0
x^2+5x-14=0
-2x^2-13x+7=0
2x^2-x-1=0
2x^2+7x+5=0

因式分解3a3b2c-6a2b2c2+9ab2c3=3ab^2 c(a^2-2ac+3c^2)
3.因式分解xy+6-2x-3y=(x-3)(y-2)
4.因式分解x2(x-y)+y2(y-x)=(x+y)(x-y)^2
5.因式分解2x2-(a-2b)x-ab=(2x-a)(x+b)
6.因式分解a4-9a2b2=a^2(a+3b)(a-3b)
...

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因式分解3a3b2c-6a2b2c2+9ab2c3=3ab^2 c(a^2-2ac+3c^2)
3.因式分解xy+6-2x-3y=(x-3)(y-2)
4.因式分解x2(x-y)+y2(y-x)=(x+y)(x-y)^2
5.因式分解2x2-(a-2b)x-ab=(2x-a)(x+b)
6.因式分解a4-9a2b2=a^2(a+3b)(a-3b)
7.若已知x3+3x2-4含有x-1的因式,试分解x3+3x2-4=(x-1)(x+2)^2
8.因式分解ab(x2-y2)+xy(a2-b2)=(ay+bx)(ax-by)
9.因式分解(x+y)(a-b-c)+(x-y)(b+c-a)=2y(a-b-c)
10.因式分解a2-a-b2-b=(a+b)(a-b-1)
11.因式分解(3a-b)2-4(3a-b)(a+3b)+4(a+3b)2=[3a-b-2(a+3b)]^2=(a-7b)^2
12.因式分解(a+3)2-6(a+3)=(a+3)(a-3)
13.因式分解(x+1)2(x+2)-(x+1)(x+2)2=-(x+1)(x+2)
abc+ab-4a=a(bc+b-4)
(2)16x2-81=(4x+9)(4x-9)
(3)9x2-30x+25=(3x-5)^2
(4)x2-7x-30=(x-10)(x+3)
35.因式分解x2-25=(x+5)(x-5)
36.因式分解x2-20x+100=(x-10)^2
37.因式分解x2+4x+3=(x+1)(x+3)
38.因式分解4x2-12x+5=(2x-1)(2x-5)
39.因式分解下列各式:
(1)3ax2-6ax=3ax(x-2)
(2)x(x+2)-x=x(x+1)
(3)x2-4x-ax+4a=(x-4)(x-a)
(4)25x2-49=(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)2x2-5x-3=(x-3)(2x+1)
(9)12x2-50x+8=2(6x-1)(x-4)
40.因式分解(x+2)(x-3)+(x+2)(x+4)=(x+2)(2x-1)
41.因式分解2ax2-3x+2ax-3= (x+1)(2ax-3)
42.因式分解9x2-66x+121=(3x-11)^2
43.因式分解8-2x2=2(2+x)(2-x)
44.因式分解x2-x+14 =整数内无法分解
45.因式分解9x2-30x+25=(3x-5)^2
46.因式分解-20x2+9x+20=(-4x+5)(5x+4)
47.因式分解12x2-29x+15=(4x-3)(3x-5)
48.因式分解36x2+39x+9=3(3x+1)(4x+3)
49.因式分解21x2-31x-22=(21x+11)(x-2)
50.因式分解9x4-35x2-4=(9x^2+1)(x+2)(x-2)
51.因式分解(2x+1)(x+1)+(2x+1)(x-3)=2(x-1)(2x+1)
52.因式分解2ax2-3x+2ax-3=(x+1)(2ax-3)
53.因式分解x(y+2)-x-y-1=(x-1)(y+1)
54.因式分解(x2-3x)+(x-3)2=(x-3)(2x-3)
55.因式分解9x2-66x+121=(3x-11)^2
56.因式分解8-2x2=2(2-x)(2+x)
57.因式分解x4-1=(x-1)(x+1)(x^2+1)
58.因式分解x2+4x-xy-2y+4=(x+2)(x-y+2)
59.因式分解4x2-12x+5=(2x-1)(2x-5)
60.因式分解21x2-31x-22=(21x+11)(x-2)
61.因式分解4x2+4xy+y2-4x-2y-3=(2x+y-3)(2x+y+1)
62.因式分解9x5-35x3-4x=x(9x^2+1)(x+2)(x-2)
63.因式分解下列各式:
(1)3x2-6x=3x(x-2)
(2)49x2-25=(7x+5)(7x-5)
(3)6x2-13x+5=(2x-1)(3x-5)
(4)x2+2-3x=(x-1)(x-2)
(5)12x2-23x-24=(3x-8)(4x+3)
(6)(x+6)(x-6)-(x-6)=(x-6)(x+5)
(7)3(x+2)(x-5)-(x+2)(x-3)=2(x-6)(x+2)
(8)9x2+42x+49=(3x+7)^2 。
没有给你答案是为你好,自己多算几遍,加深印象。

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因式分解法
1.x^2-3x+2=0
2.2x^2-x-3=0
3.(x+2)^2+x+2=0
4.3x^2-27=0
1.
(x-1)(x-2)=0
x=1 或 x=2
2.
(2x-3)(x+1)=0
x=3/2 或 x=-1
3.
(x+2+1)(x+2)=0
x=-1 或 x=-2<...

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因式分解法
1.x^2-3x+2=0
2.2x^2-x-3=0
3.(x+2)^2+x+2=0
4.3x^2-27=0
1.
(x-1)(x-2)=0
x=1 或 x=2
2.
(2x-3)(x+1)=0
x=3/2 或 x=-1
3.
(x+2+1)(x+2)=0
x=-1 或 x=-2
4.
x^2-9=0
(x+3)(x-3)=0
x=-3 或 x=3
其他没过程有答案的:
x^2-34x-35=0
35 or -1
x^2-2-3=0
3 or -1
-x^2-9x-14=0
-2 or- 7
-x^2-10x-24=0
-4 or -6
x^2-5x-6=0
6 or -1
x^2-14x-32=0
16 or 2
x^2-3x-4=0
4 or -1
-x^2-4x+5=0
-5 or 1
x^2-20x-21=0
21 or -1
x^2+8x+7=0
1 or 7
-x^2-4x-4=0
-2
-x^2-6x-8=0
-2 or -4
x^2+7x+12=0
-3 or -4
-x^2-8x-15=0
-3 or -5
x^2-4x-32=0
8 or -4
x^2-6x-27=0
9 or -3
-x^2-9x+22=0
-11 or 2
x^2+12x-28=0
-14 or 2
-x^2-4x+21=0
-7 or 3
x^2-5x-36=0
9 or -4
x^2+12x-13=0
-13 or 1
-x^2-3x+54=0
-9 or 6
-x^2-x+90=0
-10 or 9
x^2-3x-88=0
11 or -8
x^2-5x-14=0
7 or -2
x^2-3x-10=0
5 or -2
-x^2+4x+12=0
6 or -2
x^2+7x-18=0
-9 or 2
x^2+9x-10=0
-10 or 1
-x^2-11x+26=0
-13 or 2
x^2-3x-40=0
8 or -5
-x^2-5x+36=0
-9 or 4
x^2-14x-15=0
15 or -1
-x^2+22x+23=0
23 or -1
x^2-5x-50=0
10 or -5
x^2-12x-64=0
16 or -4
x^2+3x+2=0
-1 or -2
3x^2-18x+24=0
2 or 4
x^2+6x+5=0
-1 or -5
-x^2+4x+12=0
6 or -2
x^2+12x-20=0
-10 or 2
-x^2-13x+40=0
-5 or -8
x^2-x-6=0
3 or -2
-x^2-11x-28=0
x^2+2x-3=0
-x^2+5x+6=0
6 or -1
-x^2-5x-6=0
-2 or -3
-x^2-16x-63=0
-7 or -9
x^2-2x-3=0
3 or -1
-x^2-5x+4=0
1 or 4
-x^2-8x-12=0
-2 or -6
x^2-5x-6=0
6 or -1
x^2-9x+18=0
3 or 6
-x^2-6x-8=0
-2 or -4
x^2-6x-16=0
8 or -2
x^2-12x+11=0
1 or 11
-x^2+4x+5=0
5 or -1
x^2-13x+22=0
2 or 11
x^2-34x+33=0
1 or 33
-x^2-2x-1=0
-1
x^2-x-2=0
2 or -1
x^2+7x+10=0
-2 or -5
x^2+8x-20=0
-10 or 2
还有一些没答案但是都能用因式分解法做的
X^2-X-6=0
2X^2-3X-2=0
-3X^2+6X=2
4X^2-4X+1=0
X^2-2X+3=0
-X^2-2X+8=0
X^2-X-2=4
2X^2-3X+1=0
-3X^2+4X+4=0
4X^2-11X-3=3
x^2-2x-3=0
4x^2-1=0
5x^2-3x+2=0
-x^2-2x+8=0
-2x2+x+3=0
2x^2+3x-9=0
x^2-9=0
4x^2-10x-6=0
5x^2-8x-4=0
3x^2+4x-4=0
6x^2+7x-5=0
x^2-8x+12=0
2x^2-6x+3=0
2x^2+9x-5=0
3x^2-16x+5=0
2x^2-11x+5=0
4x^2-16x+7=0
10x^2-9x-7=0
2x^2-13x-7=0
2x^2-3x-2=0
-2x^2+3x-1=0
2x^2-17x-9=0
2x^2-x-6=0
12x^2+16x-3=0
6x^2-13x+2=0
3x^2-7x+2=0
5x^2-11x+2=0
2x^2-9x+9=0
2x^2+3x-9=0
x^2+2x-3=0
x^2-6x+5=0
x^2-3x+2=0
x^2-12x+32=0
x^2+6x-16=0
3x^2-12x-15=0
2x^2-11x-21=0
2x^2-7x-15=0
-x^2+8x-12=0
6x^2-x-15=0
-6x^2-7x+2=0
2x^2-x-6=0
x^2+x-6=0
x^2+5x-14=0
-2x^2-13x+7=0
2x^2-x-1=0
2x^2+7x+5=0
回答者: 傀儡F_174 | 二级 | 2011-2-10 17:46

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