问题
解答题
计算题: (1)计算:-32×3+(-1)4; (2)化简:2(3a2-b)-[-3(a2-2b)],其中a=-
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答案
(1)原式=-9×3+1=-27+1=-26;
(2)原式=6a2-2b+3a2-6b=9a2-8b,
当a=-
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计算题: (1)计算:-32×3+(-1)4; (2)化简:2(3a2-b)-[-3(a2-2b)],其中a=-
|
(1)原式=-9×3+1=-27+1=-26;
(2)原式=6a2-2b+3a2-6b=9a2-8b,
当a=-
1 |
3 |
1 |
3 |