(8x的三次方+8x²+4x+1)(8x的三次方-8x²+4x-1)² ³=(8x³+4x)²-(8x²+1)²=16x²(2x²+1)²-(8x²+1)²=12*(1/4)(1/2+1）²-（2+1）²=3*9/4-9=-9/...