A = 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 = 2101 - 2
\(\Rightarrow\)A = \(\frac{2^{101}-2}{3}\)
Rút gọn A= 2^100-2^99+2^98-2^97+...+2^2-2
Rút gọn : A = 2^100 - 2^99 + 2^98 - 2^97 + ... + 2^2 - 2
Rút gọn:
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+1
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Rút gọn:
a) \(A=2^{100}-2^{99}+2^{98}-2^{97}+...+2^2-2\)
b) \(B=3^{100}-3^{99}+3^{98}-3^{97}+...+3^2-3+1\)
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
1.Rút gọn:
\(A=2^{100}-2^{99}+2^{98}-2^{97}+...+2^2-2\)
\(B=3^{100}-3^{99}+3^{98}-3^{97}+...+3^2-3\)
Rút gọn :
\(A=2^{100}-2^{99}+2^{98}-2^{97}.............+2^2-2\)
\(B=3^{100}-3^{99}+3^{98}-3^{97}.........+3^2-3+1\)
Rút gọn A = \(2^{100}-2^{99}+2^{98}-2^{97}+..+2^2-2\)
rút gọn A = \(2^{100}-2^{99}+2^{98}-2^{97}+....+2^2-2\)
