求初中因式分解的练习题

Question

想要几道简单的因式分解练习题，需要答案，不要应用题..谢谢

Answer 1

1.解：3x^6-3x^2
=3x^2（x^4-1)
=3x^2(x^2+1)(x^2-1)
=3x^2(x^2+1)(x+1)(x-1)

2.解：(a^2-2b)^2-(1-2b)^2
=(a^2-2b+1-2b)( a^2-2b-1+2b)
=(a^2+1)(a^2-1）
=（a^2+1)(a+1)(a-1)

3.解：9x^4-36y^2
=9(x^4-4y^2)
=9(x^2+2y)(x^-2y)

4.解：4(x+y)^2-(x-y)^2
=<2(x+y)>^2-(x-y)^2
(2x+2y+x-y)(2x+2y-x+y)
=(3x+y)(x+3y)

5.解：x^2-3
=(x+根号3)(x-根号3)

6.解：x^2-5y^2
=(x+根号5><y)(x-根号5><y)

Answer 2

给你一个方法，你倒着推，想要几个就有几个

Answer 3

这个简单啊，倒着来嘛！！！

Answer 4

x^2-2x+1=(x-3)(x+1)