题目内容
(-2x-1)2(2x-1)2-16(x+3)2(x-3)2.
原式=(2x+1)2(2x-1)2-16(x+3)2(x-3)2
=[(2x+1)(2x-1)]2-16[(x+3)(x-3)]2
=(4x2-1)2-(4x2-36)2
=(4x2-1+4x2-36)(4x2-1-4x2+36)
=35(8x2-37)
=280x2-1295.
=[(2x+1)(2x-1)]2-16[(x+3)(x-3)]2
=(4x2-1)2-(4x2-36)2
=(4x2-1+4x2-36)(4x2-1-4x2+36)
=35(8x2-37)
=280x2-1295.
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