Question

因式分解4x^2-4xy+y^2-2x+y

还有x²-2xy+y²-4
a^2+2ab-ac-2bc求解啊 拜托了

Answer 1

4x^2-4xy+y^2-2x+y
=(2x-y)^2 -(2x-y)
=(2x-y)(2x-y-1)

x^2-2xy+y^2-4
=(x-y)^2 -4
=(x-y+2)(x-y-2)

a^2+2ab-ac-2bc
=a(a+2b)-c(a+2b)
=(a+2b)(a-c)

Answer 2

1shi=(x²-2xy+y²)-4=(x-y)^2-4=(x-y+2)(x-y+2)

2shi=(a^2-ac)+(2ab-2bc)=a(a-c)+2b(a-c)=(a+2b)(a-c)

Answer 3

1,(2x-y)^2-2x+y=(2x-y)(2x-y-1)
2,(x-y)^2-4=(x-y+2)(x-y-2)
3,(a+2b)(a-c)