几道初中因式分解
题目
几道初中因式分解
6x^2+7x+2=
4m^2-12m+9=
5+7x-6x^2=
12x^2+xy-6y^2=
2x^2-xy-15y^2=
x^2+x-(a^2-a)=
20a^4-33a^2b^2+7b^4=
(x^2-5x)+10(x^2-5x)-96=
ab(c^2-d^2)+cd(a^2-b^2)=
x^2-4mx+8mn-4n^2=
x^4+64=
x^3-11x^2+31x-21=
x^3-4xy^2-2x^2y+8y^3=
答案
6x^2+7x+2=(3x+2)(2x+1)
4m^2-12m+9=(2m-3)^2
5+7x-6x^2=(5-3x)(1+2x)
12x^2+xy-6y^2=(3x-2y)(4x+3y)
2x^2-xy-15y^2=(2x+5y)(x-3y)
x^2+x-(a^2-a)=(x+a)(x-a+1)
20a^4-33a^2b^2+7b^4=(4a^2-b^2)(5a^2-7b^2)
(x^2-5x)+10(x^2-5x)-96=!有错的吧?是不是(x^2-5x)^2+10(x^2-5x)-96=(x²-5x+16)(x-6)(x+1)
ab(c^2-d^2)+cd(a^2-b^2)=(ac-bd)(bc+ad)
x^2-4mx+8mn-4n^2=(x-2n)(x+2n-4m)
x^4+64=(x²+8-4x)(x²+8+4x)
x^3-11x^2+31x-21=(x-1)(x-3)(x-7)
x^3-4xy^2-2x^2y+8y^3=(x-2y)(x^2-4y^2)
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
最新试题
- May
- Life is too short to be sad!该怎么翻译啊
- Now that I look at you, perhaps there is something in what you say.
- 若关于x的一元二次方程x²-2x-m=0没有实数根则抛物线y=x²-2x-m的顶点在第几象限?
- 六年级数学(填空)
- 简算:77.77+2.23-12.3+2.3
- Wang Yaping will become China’s ______ woman astronaut into space after Liu
- 有5个单项式2a的平方,3ab,-3a的平方,-ab,-2b,若a=其中两个单项式的和,b=另两个单项式的差,a-b=?
- 一个玻璃瓶中装了110克盐水,如果再倒入10克水,则水是盐的5倍
- 英语翻译
热门考点