化简:2x^2y+{2xy-[3x^2y-2(-3x^2y+2xy)]-4xy^2} 解答加解释,谢谢啦!!

2025-05-10 04:39:38
推荐回答(1个)
回答1:

2x²y+{2xy-[3x²y-2(-3x²y+2xy)]-4xy²}
=2x²y+2xy-6x²y-4xy-4xy²
=-(4x²y+2xy+4xy²)
=-2xy(2x+1+2y)