E = 2100 - 299 +298- 297+....+22+2
=> 2A= 2101- 2100+ 299 - 298+......+23 - 22
=> 2A +A = 2101-2100+ 299- 298+......+23+22+ 2100- 299+298 -297+......+22 -2
=> 3A= 22001-2
=> \(\frac{2^{2001}-2}{3}\)
tính E= 1+2-3-4+5+6-7 ....+97+98-99-100
Tính: \(2^{100}-2^{99}-2^{98}-2^{97}-..-2-1\)
HELP ME!
Tính:
a) A=2^100 - 2^99 + 2^98 - 2^97 + ... + 2^2 - 2
b) B=3^100 - 3^99 + 3^98 - 3^97 + ... + 3^2 - 3
Tính
S=1+2-3-4+5+6-7-8+9+10-11-12+........+97+98-99-100
A=2100-299+298-297+......+22-2
Tính : B= 2^100-2^99+2^98-2^97+...+2^2-2^1
Tính M = 100^2 + 99^2 + 98^2 + 97^2 + ..... + 2^2 + 1^2
2^100-2^99+2^98-2^97+...+2^2-2
3^100-3^99+3^98-3^97+...+3^2-3+1
Giúp với các bạn ơi!!!
Rút gọn biểu thức
b) B=2^100-2^99+2^98-2^97+...+2^2-2
c) C=3^100-3^99+3^98-3^97+...+3^2-3+1
Tính : 2^100-2^99+2^98-2^97+.....+2^2-2
