1、（3b-2c）+[-4a-(c-3a)]-(3b-c)
问题描述：
1、（3b-2c）+[-4a-(c-3a)]-(3b-c)
2、-a^n-(-5)a^n-1-2(a^n-1-3a^n）
答
1、（3b-2c）+[-4a-(c-3a)]-(3b-c)=3b-2c+[-4a-c+3a]-3b+c=3b-2c-4a-c+3a-3b+c=-4a+3a+3b-3b-2c-c+c=-a-2c2 -a^n-(-5)a^n-1-2(a^n-1-3a^n）= -a^n+5a^n-1-2a^n+2+6a^n=-a^n+5a^n-2a^n+6a^n-1+2=8a^n+1