(x-2)(x-4)+1 因式分解
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(x-2)(x-4)+1因式分解(x-2)(x-4)+1因式分解(x-2)(x-4)+1因式分解(x-2)(x-4)+1=[(x-3)+1][(x-3)-1]+1=(x-3)^2-1^2+1=(x-3
(x-2)(x-4)+1 因式分解
(x-2)(x-4)+1 因式分解
(x-2)(x-4)+1 因式分解
(x-2)(x-4)+1
=[(x-3)+1][(x-3)-1]+1
=(x-3)^2-1^2+1
=(x-3)^2
(x-2)(x-4)+1
=x^2-6x+8+1
=x^2-6x+9
=(x-3)^2
(x-2)(x-4)+1
=x²-6x+8+1
=x²-6x+9
=(x-3)²