题目内容
计算:
(1)(-
)0+(-3)3-(-0.2)2011×(5)2011;
(2)2(m+1)2-(2m+1)(2m-1)
(1)(-
| 1 |
| 2 |
(2)2(m+1)2-(2m+1)(2m-1)
(1)原式=1-27-(
×5)2011
=1-27-1
=-27;
(2)原式=2m2+4m+2-4m2+1
=-2m2+4m+3.
| 1 |
| 5 |
=1-27-1
=-27;
(2)原式=2m2+4m+2-4m2+1
=-2m2+4m+3.
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