6+6^2+6^3+,+6^99
6 . 6 . 6 . 6 =
(62007-62006):62006
A) \(\left(25^6-15^6-10^6\right):5^6\)
B)\(1+2+2^2+2^3+...+2^{100}\)
C)\(7-7^4+7^5-...+7^{301}\)
tìm x thuộc N biết
a, \(2^6-2x+3.5^x=2^2.3^2+2^4\)
b, \(2.5^{x+1}+3.5^x=2^2.3+1\)
c, \(3^2+2^4-\left(6^8:6^6-6^2\right)< 5^x< 125\)
Bài 3:Tìm x:
a) (3.x-15)7= 0
b) 42 . x + 6=1
c) (3-x)10x: (3-x)20= 1 ( x ≠ 3)
d) (x-6)3=(x-6)2
Giusp minh nah
(62007-62006):62006
(111009+111008):111008
(62007-62006):62006
(111009+111008):111008
(x-4)^(x-5)^(x-6)^(x+6)^(x+5)
lũy thừa tầng nhóe...
