先化简再求值:(8x的三次方+8x²+4x+1)(8x的三次方-8x²+4x-1),其中x=1/2
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先化简再求值:(8x的三次方+8x²+4x+1)(8x的三次方-8x²+4x-1),其中x=1/2
先化简再求值:(8x的三次方+8x²+4x+1)(8x的三次方-8x²+4x-1),其中x=1/2
先化简再求值:(8x的三次方+8x²+4x+1)(8x的三次方-8x²+4x-1),其中x=1/2
(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
=-9/4