问题
解答题
(1)计算:(-2)0+4×(-
(2)计算:2(x+1)-x=______. |
答案
(1)(-2)0+4×(-
),1 2
=1-2,
=-1;
(2)2(x+1)-x,
=2x+2-x,
=x+2.
(1)计算:(-2)0+4×(-
(2)计算:2(x+1)-x=______. |
(1)(-2)0+4×(-
),1 2
=1-2,
=-1;
(2)2(x+1)-x,
=2x+2-x,
=x+2.