问题:
下列分解因式正确的是
[ ]
A x 2-2x+1=x(x-2)+1
B x 2-4xy+4y 2 =(x-2y) 2
C (x+5)(x-5)=x 2-25
D x 2+y 2=(x+y)(x-y)
下列分解因式正确的是
B x 2-4xy+4y 2 =(x-2y) 2
C (x+5)(x-5)=x 2-25
D x 2+y 2=(x+y)(x-y)
[ ]
A x 2-2x+1=x(x-2)+1 B x 2-4xy+4y 2 =(x-2y) 2
C (x+5)(x-5)=x 2-25
D x 2+y 2=(x+y)(x-y)
参考答案: