题目内容
(1)计算:(-2)0+4×(-
)=______;
(2)计算:2(x+1)-x=______.
| 1 |
| 2 |
(2)计算:2(x+1)-x=______.
(1)(-2)0+4×(-
),
=1-2,
=-1;
(2)2(x+1)-x,
=2x+2-x,
=x+2.
| 1 |
| 2 |
=1-2,
=-1;
(2)2(x+1)-x,
=2x+2-x,
=x+2.
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