Simplify the following 2+5 (2-4^2)-19?
回答 (2)
✔ 最佳答案
2 + 5(2 - 4^2) - 19
= 2 + 5(2 - 16) - 19
= 2 + 5(2) - 5(16) - 19
= 2 + 10 - 80 - 19
= 12 - 80 - 19
= -68 - 19
= -87
2 + 5 ( 2 - 16 ) - 19
2 + 5 ( - 14 ) - 19
2 - 70 - 19
2 - 89
- 87
收錄日期: 2021-05-01 12:55:25
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