Question

求解：初二因式分解题

1-（X-2)²=
2M²N-8N³=
a²-6ab+3a=
x²-y²+9x+9y=
(x+y)²-(x-y)²=
(x+5)(x-6)=
(x-1)(x-3)=
（2x+1)(3x-1)=
(x+40)(x-1)=

Answer 1

1-（X-2)²= (1+x-2)(1-x+2)=(x-1)(3-x)
2M²N-8N³=2N(M+2N)(M-2N)
a²-6ab+3a= a(a-6b+3)
x²-y²+9x+9y=(x+y)(x-y)+9(x+y)=(x+y)(x-y+9)
(x+y)²-(x-y)²=2x*2y=4xy
(x+5)(x-6)=这个不能因式分解了=x²-x-30
(x-1)(x-3)=这个不能因式分解了=x²-4x+3
（2x+1)(3x-1)这个不能因式分解了=6x²+x-1
(x+40)(x-1)=这个不能因式分解了=x²+39x-40

追问

谢谢