(____+2a-3)+(-3a^2-2a+____)=a^2-1
问题描述:
(____+2a-3)+(-3a^2-2a+____)=a^2-1
答
(4a^2+2a-3)+(-3a^2-2a+2)=a^2-1
(____+2a-3)+(-3a^2-2a+____)=a^2-1
(4a^2+2a-3)+(-3a^2-2a+2)=a^2-1