(a-b)^2+8(b-a)+12因式分解
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(a-b)^2+8(b-a)+12因式分解
(x+y)^2-4(x^2-y^2)+4(x-y)^2
(x+y)^2-4(x^2-y^2)+4(x-y)^2
![(a-b)^2+8(b-a)+12因式分解](/uploads/image/z/17539348-4-8.jpg?t=%28a-b%29%5E2%2B8%28b-a%29%2B12%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3)
(a-b)^2+8(b-a)+12
=(a-b)^2-8(a-b)+12
=(a-b-6)(a-b-2)
(x+y)^2-4(x^2-y^2)+4(x-y)^2
=(x+y)^2-4(x-y)(x+y)+4(x-y)^2
=[(x+y)-2(x-y)]^2
=(-x+3y)^2
=(x-3y)^2
=(a-b)^2-8(a-b)+12
=(a-b-6)(a-b-2)
(x+y)^2-4(x^2-y^2)+4(x-y)^2
=(x+y)^2-4(x-y)(x+y)+4(x-y)^2
=[(x+y)-2(x-y)]^2
=(-x+3y)^2
=(x-3y)^2