-2(a²bc)²×½a(bc)³-(abc)²×(-abc)³

问题描述:

-2(a²bc)²×½a(bc)³-(abc)²×(-abc)³

-2(a²bc)²×½a(bc)³-(abc)²×(-abc)³=-(a²bc)²a(bc)³+(abc)²(abc)³=0