cmr \(7^{20}+49^{11}+343^7⋮57\)

tim cac so m,n nguyen duong la a

\(2^m-2^n=256\)

chung minh rang

a, \(7^8+7^7-7^6⋮55\)

b ,\(16^5+2^{15}⋮33\)

c, \(81^7-27^9-9^{13}⋮405\)

so sanh

a,\(2^{63}va3^{42}\)

b, \(5^{400}va25^{200}\)

c, \(\left(\dfrac{-1}{16}\right)^{100}va\left(\dfrac{-1}{2}\right)^{500}\)

giup minh nhe minh dang can gap

tim x

a, \(\left(3x-2\right)^2=16\)

b, \(\left(\dfrac{4}{5}x-\dfrac{3}{4}\right)^3=\dfrac{-8}{125}\)

c, \(5^{x+2}+5^x=3250\)

d, \(\left(4x-3\right)^4=\left(4x-3\right)^2\)

giup minh nhe minh dang can gap

Chứng minh rằng: \(\dfrac{\left(3^4-3^3\right)^3}{27^3}\)⋮ 2

Bài khó mà nhìu wa

1)\(2^{17}+2^{14}\)chia hết cho 9

2)\(8^7-2^{18}\)chia hết cho 14

Cứu

so sánh 5^300 và 7^200

So sánh 2^30 + 3^30+ 4^30 và 3*4^10

chứng tỏ rằng

128.912 = 1816