( 3/2.5 + 3/5.8 + 3/8.11 + .........+ 3/302.305 ) - 4x = 2/305
1/2.5 - 1/5.8 -1/8.11 - ...- 1/302.305
tính tổng:
A=2:2.5+2:5.8+...+2:302.305
2 / 2.5 + 2 / 5.8 + 2/ 8.11 + ............. + 2/ 14.17
Tính giá trị biểu thức: A=2/2.5+2/5.8+2/8.11+...........+2/95.98
A=2/1.3+2/3.5+2/3.7+....+2/2021.2023
=)
B=1/2.5+1/5.8+1/8.11+...+1/95.98
A=2/2.5 + 2/5.8 +2/8.11+...2/92.95+ 2/95.98. giúp bé vs ạ.bé sẽ tick đúng cho mn nhé
tính S=23/2.5+23/5.8+23/8.11+...+23/53.56 = ?
C=1-2+22-23+....+2100
D=1/5-1/52+1/53+.....+1/5101
E=4/2.5+4/5.8+..........+4/302.305