化简1/2a^2-5ac-(3a^2c-a^2b)+(3ac-4a^2c)
问题描述:
化简1/2a^2-5ac-(3a^2c-a^2b)+(3ac-4a^2c)
答
1/2a^2-5ac-(3a^2c-a^2b)+(3ac-4a^2c)
=1/2a^2-5ac-3a^2c+a^2b+3ac-4a^2c
=1/2a^2-2ac-7a^2c+a^2b