Câu 1 : A= 989898.89 – 898989.98 / 2 mũ 3 + 3 mũ 4 + 4 mũ 5+….+ 2014 mũ 2015 21/08/2021 Bởi Eloise Câu 1 : A= 989898.89 – 898989.98 / 2 mũ 3 + 3 mũ 4 + 4 mũ 5+….+ 2014 mũ 2015
`A= {989898.89 – 898989.98}/{2^3 + 3^4 + 4^5+….+ 2014^2015}` `A= {98.10101.89 – 89.10101.98}/{2^3 + 3^4 + 4^5+….+ 2014^2015}` `A= {98.10101.(89 – 89)}/{2^3 + 3^4 + 4^5+….+ 2014^2015}` `A= {98.10101.0}/{2^3 + 3^4 + 4^5+….+ 2014^2015}` `A={0}/{2^3 + 3^4 + 4^5+….+ 2014^2015}` `\text{Vậy A = 0}` Bình luận
A= 989898 . 89 – 898989. 98/ 2^ 3+ 3^ 4+…+ 2014^ 2015 = 98 . 10101 . 89 – 89.10101 . 98 / 2^ 3+ 3^ 4+…+ 2014^2015 = 0 /2^ 3+ 3^ 4+..+ 2014^2015 = 0 Vậy A= 0 Học tốt nhé! Bình luận
`A= {989898.89 – 898989.98}/{2^3 + 3^4 + 4^5+….+ 2014^2015}`
`A= {98.10101.89 – 89.10101.98}/{2^3 + 3^4 + 4^5+….+ 2014^2015}`
`A= {98.10101.(89 – 89)}/{2^3 + 3^4 + 4^5+….+ 2014^2015}`
`A= {98.10101.0}/{2^3 + 3^4 + 4^5+….+ 2014^2015}`
`A={0}/{2^3 + 3^4 + 4^5+….+ 2014^2015}`
`\text{Vậy A = 0}`
A= 989898 . 89 – 898989. 98/ 2^ 3+ 3^ 4+…+ 2014^ 2015
= 98 . 10101 . 89 – 89.10101 . 98 / 2^ 3+ 3^ 4+…+ 2014^2015
= 0 /2^ 3+ 3^ 4+..+ 2014^2015
= 0
Vậy A= 0
Học tốt nhé!