A=\(\dfrac{2}{3}\)+\(\dfrac{14}{15}\)+\(\dfrac{34}{35}\)+\(\dfrac{62}{63}\)+\(\dfrac{98}{99}\)+\(\dfrac{142}{143}\)+\(\dfrac{194}{195}\)
Và B=5+\(\dfrac{1}{2^2}\)+\(\dfrac{1}{3^3}\)+\(^{\dfrac{1}{4^4}}\)+\(\dfrac{1}{5^5}\)+\(\dfrac{1}{6^6}\)+\(\dfrac{1}{7^7}\).So sánh A và B
a,0,25.1+3/5.(5/4)2:4/7
b,1/15+1/35+1/63+1/99+1/143+1/195
c,1-(5+3/8+x-7+5/24):(-16+2/3)=0
3x/5=1/3+1/15+1/35+1/63+1/99+1/143
tính nhanh tổng sau:
5/3 + 5/15 + 5/35 + 5/63 + 5/99 + 5/143
jup mik nha
Tính tổng:
1/15+1/35+1/63+1/99+1/143
1/5*9+1/9.13+1/13*17+...+1/25*29
2/15+3/15+2/63+...+2/9603
mơn mọi người
Tìm x
a. (x-2)×(x+3)<0 với x€Z
b. (1/15+1/35+1/63+1/99+1/143+1/195) ×5x=5+1/3
Bài 1 :So sánh
A= 2^19 .27^3+15.4^9.9^4/6^9.2^10+12^10 va B = 4/35+4/63+4/99+4/143+4/195
Bài 2 : tìm x biết :
60%.x+0,4.x +x:3=2
a ) A = 1/3 + 1/15 + 1/35 + 1/63 + 1/99 + 1/143
b) x + ( x + 1 ) + ( x + 2 ) + ....+ ( x + 99 ) = 14950
éc ô éc
So sánh
a) (-2)^300 va (-3)^200
b) A= 2^19 .27^3 +15.4^9 .9^4
6^9 .2^10 +12^10
và B= 4/ 35 + 4 /63 +4/99 +4/143+ 1/195
