2014 x 2016 + \(\frac{2017}{2015}\)x 2015 + 2016
= 2014 x 2016 + 2017 + 2016 x 1
= 2016 x ( 2014 + 1 ) + 2017
= 2016 x 2015 + 2017
= 4064257
2014 x 2016 + \(\frac{2017}{2015}\)x 2015 + 2016
= 2014 x 2016 + 2017 + 2016 x 1
= 2016 x ( 2014 + 1 ) + 2017
= 2016 x 2015 + 2017
= 4064257
Tinh nhanh phan so
2015 x 2017 - 1 / 2014 + 2015 x 2016
Tính nhanh : \(\frac{2017+\frac{1}{2016}+\frac{2}{2015}+\frac{3}{2014}+...+\frac{2015}{2}+\frac{2016}{1}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{2015}+\frac{1}{2016}}\)
Tính 2014 x 2015 + 2016 / 2016 x 2015 - 2014
tính nhanh 2016/2014 - 2017/2015 - 2/ 2014x2015
Tính nhanh :
2019 + 2017 + 2015 + .... + 1003 + 1001 - 2018 - 2016 - 2014 -.... - 1002 - 1000
Tính nhanh
1) 9 x 10 + 10 x 11 + 11 x 12 + ....+ 2015 x 2016
2) 1 x 2 x 3 + 2 x 3 x 4 + 3 x 4 x 5 + ....+ 2015 x 2016 x 2017
so sanh a va b a=2014+2015/2015+2016vab=2015+2016/2016+2017
2015*2017-1/2014+2015*2016
tính nhanh (2015+2014*2016)/(2015*2016-1)
ai nhanh mình k nhưng phải đúng và trình bày nha