化简求值:2(a^2b+3ab^2)-4(ab^2+3a^2b)-(a^2b-2ab^2),其中a=-1/2,b=1/3
问题描述:
化简求值:2(a^2b+3ab^2)-4(ab^2+3a^2b)-(a^2b-2ab^2),其中a=-1/2,b=1/3
答
化简求值:2(a^2b+3ab^2)-4(ab^2+3a^2b)-(a^2b-2ab^2)
=2a^2b+6ab^2-4ab^2-12a^2b-a^2b+2ab^2
=-11a^2b+4ab^2