-2分之1(4xy-8x²)+3分之1(xy-6x²y²)化简.

问题描述:

-2分之1(4xy-8x²)+3分之1(xy-6x²y²)化简.

-2分之1(4xy-8x²)+3分之1(xy-6x²y²)
=-2xy+4x²+1/3xy-2x²y²
=-5/3xy+8x²-2x²y²)