问题
填空题
计算:-1+2=______,|-2|=______,-(-2)=______,(a3)4=______.
答案
-1+2=1;
|-2|=-(-2)=2;
-(-2)=2;
(a3)4=a3×4=a12.
计算:-1+2=______,|-2|=______,-(-2)=______,(a3)4=______.
-1+2=1;
|-2|=-(-2)=2;
-(-2)=2;
(a3)4=a3×4=a12.