f(x²+1)=x4+5x²+3,求f(x²-1)怎么解?
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f(x²+1)=x4+5x²+3,求f(x²-1)怎么解?
f(x²+1)=x4+5x²+3,求f(x²-1)怎么解?
f(x²+1)=x4+5x²+3,求f(x²-1)怎么解?