![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài làm:
(2019-2018+2017-.....-2) x (100 -25x2x2)
=(2019-2018+2017-.....-2) x (100 -25x4)
=(2019-2018+2017-.....-2) x 0
=0
*like phát
=(2019 – 2018 + 2017 – 2016 + 2015 + ....... – 4 + 3 – 2) x(100-25x4)
=(2019 – 2018 + 2017 – 2016 + 2015 + ....... – 4 + 3 – 2) x(100-100)
=(2019 – 2018 + 2017 – 2016 + 2015 + ....... – 4 + 3 – 2) x0
=0
![](https://rs.olm.vn/images/avt/0.png?1311)
2016 × 2018 - 1/2015 + 2016 × 2017
= 2016 × (2017 + 1) - 1/2015 + 2016 × 2017
= 2016 × 2017 + (2016 - 1)/2015 + 2016 × 2017
= 2016 × 2017 + 2015/2015 + 2016 × 2017
= 1
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
A = 2016 x 2016
B = 2018 x 2014
A = 2016 x ( 2014 + 2 )
A = 2016 x 2014 + 2016 x 2
B = 2018 x 2014
B = ( 2016 + 2 ) x 2014
B = 2016 x 2014 + 2 x 2014
Vì 2016 x 2014 = 2016 x 2014, mà 2016 x 2 > 2 x 2014
=> A > B
A = 2016 x 2016
A = (2018 - 2) x (2014 + 2)
A = 2018 x (2014 + 2 ) - 2 x (2014 + 2)
A = 2018 x 2014 + 4036 - 4028 + 4
A = 2018 x 2014 + 12
Mà B = 2018 x 2014
=> A > B
\(\frac{2018\cdot2016+2021}{2017\cdot2018+3}\)
\(=\frac{2018\cdot2016+2021}{2016\cdot2018+2018\cdot1+3}\)
\(=\frac{2018\cdot2016+2021}{2016\cdot2018+2021}\)
\(=1\)