3x²·(-2xy)²-x²(x²y²-2x)化简啊2a·(a²+3a-2)-3(a³+2a²-a+1)

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3x²·(-2xy)²-x²(x²y²-2x)化简啊2a·(a²+3a-2)-3(a³+2a²-a+1)
3x²·(-2xy)²-x²(x²y²-2x)化简啊
2a·(a²+3a-2)-3(a³+2a²-a+1)

3x²·(-2xy)²-x²(x²y²-2x)化简啊2a·(a²+3a-2)-3(a³+2a²-a+1)
3x²(-2xy)²-x²(x²y²-2x)
=3x²*4x²y²-x^4y²+2x³
=12x^4y²-x^4y2+2x³
=11x^4y²+2x³
2a·(a²+3a-2)-3(a³+2a²-a+1)
=2a³+6a²-4a-3a³-6a²+3a-3
=-a³-a-3