已知x的平方-8x-3=0,求(x-i)(x-3)(x-5)(x-7)的值

x²-8x-3=0
x²-8x=3
(x-1)(x-3)(x-5)(x-7)
=(x-1)(x-7)(x-3)(x-5)
=(x²-8x 7)(x²-8x 15)
=(3 7)(3 15)
=10*18
=180

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