So sánh phân số
\(\frac{2015x2016-1}{2015x2016}\)và\(\frac{2016x2017-1}{2016x2017}\)
So sánh phân số hộ mình nha\(\frac{2015x2016-1}{2015x2016}\)và\(\frac{2016x2017-1}{2016x2017}\)
Tìm A biết A = 1x2 + 2x3 + 3x4 + ... + 2015x2016 + 2016x2017
x+2x+3x+4x+...+2015x=2015x2016
tralloi nhanh tik
Tính ;
B=1x2015+2x2014+...+2015x1/1x2+2x3+..+2015x2016
Giúp mình với!
C= 3/1x2+3/2x3+3/4x5+....+3/2015x2016
tìm x :1/2013+X+1/2+1/6+1/2+......+1/2015x2016=2
Tinh nhanh:
225x17-16x225-225
28x76+24x28-2x45x18
17x85+15x17-120
341x67+341x16+659x83
45x53+47x156-47x114
(2015x2016+2016x2017)x(25x32-50x16)
Tinh nhanh:
225x17-16x225-225
28x76+24x28-2x45x18
17x85+15x17-120
341x67+341x16+659x83
45x53+47x156-47x114
(2015x2016+2016x2017)x(25x32-50x16)
ai nhanh duoc tich 2d tro len