5(y-x)³·3x²(x-y)^6计算

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5(y-x)³·3x²(x-y)^6计算

5(y-x)³·3x²(x-y)^6
=5(y-x)³·3x²(y-x)^6
=15x²(y-x)^9

=-5(x-y)³·3x²(x-y)^6
=-15x²(x-y)^9