(x^2-1994^2)^2-7976x-1=01

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(x^2-1994^2)^2-7976x-1=01(x^2-1994^2)^2-7976x-1=01(x^2-1994^2)^2-7976x-1=01（x^2-1994^2)^2-7976x-1=0（

(x^2-1994^2)^2-7976x-1=01
(x^2-1994^2)^2-7976x-1=0
1

(x^2-1994^2)^2-7976x-1=01
（x^2-1994^2)^2-7976x-1=0 （x+1994)^2.(x-1994)^2-7976x-1=0 [(x+1994)^2+1][(x-1994)^2-1]=0 得(x+1994)^2+1=0（舍去）或者(x-1994)^2-1=0 (x-1994)^2=1得x=1993或者x=1995

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