a(x-2)-b(x-2)+(2-x) 因式分解

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a(x-2)-b(x-2)+(2-x) 因式分解
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a(x-2)-b(x-2)+(2-x) 因式分解
a(x-2)-b(x-2)+(2-x) 因式分解

a(x-2)-b(x-2)+(2-x) 因式分解
a(x-2)-b(x-2)+(2-x)
=a(x-2)-b(x-2)-(x-2)
=(a-b-1)(x-2)

a(x-2)-b(x-2)+(2-x)
=a(x-2)-b(x-2)-(x-2)
=(x-2)(a-b-1)

(a-b-1)(x-2)

=a( x- 2)-b( x- 2)-( x- 2)
= ( x- 2)( a- b- c)

(x-2)(a-b-1)

(x-2)(a-b-1)