计算:(-2x-1)²(2x-1)²-16(x+3)²(x-3)²
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计算:(-2x-1)²(2x-1)²-16(x+3)²(x-3)²
计算:(-2x-1)²(2x-1)²-16(x+3)²(x-3)²
计算:(-2x-1)²(2x-1)²-16(x+3)²(x-3)²
=(2x+1)^2(2x-1)^2-16[(x+3)(x-3)]^2=[(2x+1)(2x-1)]^2-[4(x^2-9)]^2=(4x^2-1)^2-(4x^2-9)^2=(4x^2-1+4x^2-9)(4x^2-1-4x^2+9)=64x^2-80