题目内容
A.2a3-8a2+12a=2a(a2-4a+6) B.x2-5x-6=(x-2)(x-3)
C.(a-b)2-c2=(a-b+c)(a-b-c) D.x2+xy+xz+yz=(x+y)(x+z)
A.2a5-8a2+12a=2a(a4-4a+6)
B.x2-5x+6=(x-2)(x-3)
C.(a-b)2-c2=(a-b+c)(a-b-c)
D.-2a2+4a-2=-2(a+1)2