Hay viet 2A + 1 duoi dang mot luy thua
Cho A= 1 + 3 + 32 + ..... + 32007
cho A=1+2+2^2 +2^3 +...+2^200 .hay viet A+1 duoi dang mot luy thua
A=1+2+22+23+...+2100
=>2A=2+22+23+24+...+2101
=>2A-A=(2+22+23+24+...+2101)-(1+2+22+23+...+2100)
=>A=2101-1
=>A+1=2101-1+1=2101
A = 1+2+22+23+...+2100
2A = 2+22+23+24+...+2100
2A - A = 2100 - 1
=> A = 2100 - 1
=> A + 1 = 2100
A=1+2+2^2 +2^3 +...+2^200
2A = 2+2^2 + 2^3 + ...+2^200 + 2^201
2A - A =( 2+2^2 + 2^3 + ...+2^200 + 2^201)-(1+2+2^2 + 2^3 + ...+2^200 )
=> A = 2^201 - 1
=> A+1 = 2^201
Cho A=1+3+3^2+...+3^10.Hay viet :
2A +1 duoi dang luy thua
Giúp mình voi ,mình đang cần gấp
A = 1 + 3 + 32 + ... + 310
3A = 3 + 32 + 33 + ... + 311
3A - A = (3 + 32 + 33 + ... + 311) - (1 + 3 + 32 + ... + 310)
2A = 311 - 1
2A + 1 = 311
viet thuong 276 : 33 duoi dang mot luy thua
viet cac tich sau duoi dang luy 1 luy thua
82.324=?
273.94.243=?
\(8^2.32^4=\left(2^3\right)^2.\left(2^5\right)^4=2^6.2^{20}=2^{26}\)
273.94.243\(=\left(3^3\right)^3.\left(3^2\right)^4.\left(3.2^3\right)^3=3^9.3^8.3^3.2^9=3^{20}.2^9\)
hay viet phep tinh sau duoi dang luy thua:
3^2 . 2^3
3^2 . 2^3
= 3^2 . 2^2 . 2
= (3 . 2)^2 . 2
= 6^2 . 2
Mà hình như đây không phải là toán lớp 5 bạn nhỉ!
Viet tich sau duoi dang luy thua cua mot so :
27^3 x 9^4 x 243
=(3^3)^3x(3^2)4x3^5
=3^9x3^8x3^5
=3^22
viet ket qua phep tinh duoi dang mot luy thua
a4:a
Cho A = 4+2^2+2^3+2^4+...+2^30. hay viet A duoi dang luy thua co so 2
viet cac bieu thuc sau duoi dang mot luy thua
32x8 mu 5x1024