ab-[3ab-(4ab^2+1)]-4ab^2化简.
问题描述:
ab-[3ab-(4ab^2+1)]-4ab^2化简.
答
ab-[3ab-(4ab^2+1)]-4ab^2
=ab-(3ab-4ab^2-1)-4ab^2
=ab-3ab+4ab^2+1-4ab^2
=1-2ab