a) 7⁴

b) 2.3.8.6².6⁴

c) 7². 35²

d) x⁴ . y⁴

a ) 7.7.7.7 = 7⁴

 b ) 2.3.8.12.24 = 2. 3 . 2³ . 2² . 3 . 2³ . 3

c ) 7.35.7.35 = 7⁴ . 5²              

d ) x.x.x.y.y.y.x.y = x⁴ .  y⁴

a/ A = 2.2².2³.2⁴.2⁸ = 2¹⁸

b/ B = 3.3².3³.3⁴.3⁶ = 3¹⁶

c/ C = 2.5².5³.5⁴.5⁷ = 2.5¹⁶

d/ D = 7.7².7³.7⁷ = 7¹³

2^40 nha bạn. Chắc chắn 100%

1.
a) \(3^4\times3^5\times3^6=3^{4+5+6}=3^{15}\)

b) \(5^2\times5^4\times5^5\times25=5^2\times5^4\times5^5\times5^2=5^{2+4+5+2}=5^{13}\)

c) \(10^8\div10^3=10^{8-3}=10^5\)

d) \(a^7\div a^2=a^{7-2}=a^5\)

2.

\(987=900+80+7\\ =9\times100+8\times10+7\\ =9\times10^2+8\times10^1+7\times10^0\)

\(2021=2000+20+1\\ =2\times1000+2\times10+1\times1\\ =2\times10^3+2\times10^1+1\times10^0\)

\(abcde=a\times10000+b\times1000+c\times100+d\times10+e\times1\\ =a\times10^4+b\times10^3+c\times10^2+d\times10^1+e\times10^0\)

còn bài 2

Anh đã từng làm em hi!

\(A=2.4.8.16.256=2.2^2.2^3.2^4.2^8=2^{18}\)

\(B=3.9.27.81.729=3.3^2.3^3.3^4.3^6=3^{16}\)

\(C=5.25.125.625.5^7=5.5^2.5^3.5^4.5^7=5^{17}\)

\(D=7.49.343.7^7=7.7^2.7^3.7^7=7^{13}\)

A = 2.4.8.16.256

A = 2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2

A = 2¹⁸

b1 

a.7^3

b.7^3*5^3

c.2^5*3^3*4^2

dx^3 *y^3

mình nha mình làm b1 thui

a) 7.7.7 = 7³

b) 7.35.7.25 = 5³  x  7³

c) 2.3.8.12.24 = 2⁹ x 3³

d) x.x.y.y.x.y.x = x⁴ . y3

Bài 2:Viết kết quả dưới dạng lũy thừa.

a) 3⁵ : 3⁷ = 3^-2

b) 125 : 5³  = 1¹

c) 7⁵ : 343 = 7²

d) a¹² : a⁸  = a⁴

Bài 1:

a) 7³

b) 5³.7³

c) 2⁹.3³

d) x⁴.y³

Bài 2:

a) 3⁵:3⁷=3^5-7=3^-2

b) 125:5³=5³:5³=1

c) 7⁵:343=7⁵:7³=7^5-3=7²

d) a¹²:a⁸=a^12-8=a⁴

Câu 3 :

A = 7776 . 8 - 2.243. 64

A = 62208 - 31104

A = 31104

Câu 1 :

a) \(12^5=3^5.4^5\)

b) \(20^6=4^6.5^6\)

c) \(54^3=6^3.9^3\)

Câu 2 :

a) \(3.5^{55}=3.\left(5^5\right)^{11}\)

b) \(4.3^{816}=4.\left(3^{17}\right)^{48}\)

c) \(9.8.7^{6412}=9.8.\left(7^{28}\right)^{229}\)