先化简(X-Y)[(X+Y)²-XY]+(X+Y)[(X-Y)²+XY]
=(X-Y)[(X²+2XY+Y²-XY]+(X+Y)[X²-2XY+Y²+XY]
=(X-Y)[X²+XY+Y²]+(X+Y)[X²-XY+XY²]
=X^3+X²Y+XY²-X²Y-XY²-Y^3+X^3-X²Y+XY²+XY-XY²+Y^3
=2X^3
所以不管Y带什么最后都是消掉的,答案总是2*2006^3=16144432432
先化简(X-Y)[(X+Y)²-XY]+(X+Y)[(X-Y)²+XY]
=(X-Y)[(X²+2XY+Y²-XY]+(X+Y)[X²-2XY+Y²+XY]
=(X-Y)[X²+XY+Y²]+(X+Y)[X²-XY+XY²]
=X^3+X²Y+XY²-X²Y-XY²-Y^3+X^3-X²Y+XY²+XY-XY²+Y^3
=2X^3
所以不管Y带什么最后都是消掉的,答案总是2*2006^3=16144432432