5h30 đi học rồi [-1/2 + (4/2 – 2/2)] + (-1) – 6/5 5^24 . 5^23/5^25 . 5^23 09/11/2021 Bởi Adalynn 5h30 đi học rồi [-1/2 + (4/2 – 2/2)] + (-1) – 6/5 5^24 . 5^23/5^25 . 5^23
1) `[-1/2+(4/2-2/2)]+(-1)-6/5` `=(-1/2+2/2)-1-6/5` `=1/2-1-6/5` `=5/10-10/10-12/10` `=-17/10` `=-1,7` 2) `(5^24 . 5^23)/(5^25 . 5^23)` `=5^47/5^48` `=1/5` Bình luận
Đáp án: `[-1/2 + (4/2 – 2/2)] + (-1) – 6/5` `= [-1/2 + 2/2] + (-1) – 6/5` `= 1/2 + (-1) – 6/5` `= -1/2 – 6/5` `= -17/10` `(5^{24} . 5^{23})/(5^{25} . 5^{23})` `= 5^{47}/5^{48}` `= 1/5` Bình luận
1)
`[-1/2+(4/2-2/2)]+(-1)-6/5`
`=(-1/2+2/2)-1-6/5`
`=1/2-1-6/5`
`=5/10-10/10-12/10`
`=-17/10`
`=-1,7`
2)
`(5^24 . 5^23)/(5^25 . 5^23)`
`=5^47/5^48`
`=1/5`
Đáp án:
`[-1/2 + (4/2 – 2/2)] + (-1) – 6/5`
`= [-1/2 + 2/2] + (-1) – 6/5`
`= 1/2 + (-1) – 6/5`
`= -1/2 – 6/5`
`= -17/10`
`(5^{24} . 5^{23})/(5^{25} . 5^{23})`
`= 5^{47}/5^{48}`
`= 1/5`