因式分解:(1)16(x-1)-(x+2)^2 (2)(x-2)(x-4)+1

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因式分解:(1)16(x-1)-(x+2)^2 (2)(x-2)(x-4)+1

因式分解:(1)16(x-1)-(x+2)^2 (2)(x-2)(x-4)+1
因式分解:
(1)16(x-1)-(x+2)^2
(2)(x-2)(x-4)+1

因式分解:(1)16(x-1)-(x+2)^2 (2)(x-2)(x-4)+1
16(x-1)-(x+2)^2
=16x-16-x^2-4x-4
=-x^2+12x-20
=-(x^2-12x+20)
=-(x-2)(x-10)
(x-2)(x-4)+1
=x^2-6x+8+1
=x^2-6x+9
=(x-3)^2

(2-x)(10-x)
(x-3)^2

(1)
(2)、(x-3)*(x-3)

1 -(x-2)*(x-10)
2 (x-1)*(x-6)