原式=1/4*(2x-1)(2x+1)/(4x²+1)/(16x^4-1)=1/4*(4x²-1)/(4x²+1)/(16x^4-1)=1/4*(16x^4-1)/(16x^4-1)=1/4
原式=1/4*(2x-1)(2x+1)(4x²+1）/(4x²+1)/(16x^4-1)=1/4*(4x²-1)/(4x²+1)/(16x^4-1)=1/4*(16x^4-1)/(16x^4-1)=1/4
