a) 3³ . 3⁴ = 3⁷

b) 5² . 5⁷ = 5⁹

c) 7⁵ . 7 = 7⁶

a) \(3^3.3^4=3^{3+4}=3^7\)

b) \(5^2.5^7=5^{2+7}=5^9\)

c) \(7^5.7=7^{5+1}=7^6\)

\(3^3.3^4=3^{3+4}=3^7\)

\(5^2.5^7=5^{2+7}=5^9\)

\(7^5+7=7^{5+1}=7^6\)

Sao chẳng có ai T mik z bất công quá

a) \(5^{20}.5=5^{20+1}=5^{21}\)

b) \(7^9:7=7^{9-1}=7^8\)

a)5²⁰ x 5 = 5²⁰ x 5¹ =5⁽²⁰⁺¹⁾=5²¹

b)7⁹ : 7 = 7⁹ : 7¹ = 7^(9-1) = 7⁸

a)  5²⁰ x 5 = 5^{20 +1} = 5²¹

b) 7⁹ : 7 = 7^9-1 = 7⁸

\(3^3.3^4=3^{3+4}=3^7\)

\(5^2.5^7=5^{2+7}=5^9\)

\(7^5.7=7^{5+1}=7^6\)

a,3³.3⁴=3⁷

b,5².5⁷=5⁹

c,7⁵.7=7⁶

a)    3³.3⁴=3⁷

b)     5².5⁷=5⁹

c)     7⁵.7=7⁶

Ai kick mình mình kick lại

a) 3³ . 3⁴ = 3⁷

b) 5² . 5⁷ = 5⁹

c) 7⁵ . 7 = 7⁶

a, 3³ . 3⁴ = 3⁷

b, 5² . 5⁷ = 5⁹

c, 7⁵ . 7 = 7⁶

\(a,3^3.3^4=3^{3+4}=3^7\)

\(b,5^2.5^7=5^{2+7}=5^9\)

\(c,7^5.7=7^{5+1}=7^6\)

a) 3^7=2187

b) 5^9=1953125

c) 7^6=117649

a     3^7=2187

b 5^9=9153125

c    7^6=117649

a)

\(\begin{array}{l}{11^7}{.11^3} =11^{7-3}={11^4};\,\,\,\,\,\,\,{11^7}:{11^7} =11^{7-7}=11^0= 1;\\{7^2}{.7^4} = 7^{2+4}= {7^6};\,\,\,\,\,\,\,\,\,\,\,\,\,{7^2}{.7^4}:{7^3} = 7^{2+4-3}= {7^3}.\end{array}\)

b) +) Phép tính đúng là:

\({9^7}:{9^2} = {9^5}\) vì \({9^7}:{9^2}=9^{7-2} = {9^5}\)

+) Các phép tính sai là:

\({2^{11}}:{2^8} = 6 \) vì \({2^{11}}:{2^8} = 2^{11-8} = 2^3\) ;

\({7^{10}}:{7^2} = {7^5}\) vì \({7^{10}}:{7^2} = 7^{10-2} = 7^8\);

\({5^6}:{5^6} = 5\) vì \({5^6}:{5^6}=5^{6-6}=5^0 =1\)

\(3^3.3^4=2187\)

\(5^2.5^7=1953125\)

\(7^{5.7}=7^{35}\)

3^3.3^4=3^7=2187

5^2.5^7=5^9=1953125

7^5.7=7^6=117649

bn k mik nhoa!

\(3^3.3^4=3^7\)

\(5^2.5^7=5^9\)

\(7^{5.7}=7^{35}\)

5^177

7^2000

16^136

\(5^{200}:5^{23}=5^{200-23}=5^{177}\)

\(7^{2001}:7=7^{2001-1}=7^{2000}\)

\(16^{137}:4^2=16^{137}:16=16^{137-1}=16^{136}\)

5²⁰⁰ : 5²³ = 5 ^{(200 - 23) =} 5¹⁷⁷

7^{2001 : 7 =} 7^{(2001 - 1) =} 7²⁰⁰⁰

16¹³⁷ : 4² = ( 4²)¹³⁷ : 4² = 4²⁷⁴ : 4² = 4^(274-2) = 4²⁷²

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

\(3^3.3^4=3^{3+4}=3^7\)

\(5^2.5^7=5^{2+7}=5^9\)

\(7^5.7=7^{5+1}=7^6\)

Nhấn đúng cho mk nha!!!!!!!!!

a) 3³.3⁴=3³⁺⁴=3⁷

b) 5².5⁷=5²⁺⁷=5⁹

c) 7⁵.7=7⁵⁺¹=7⁶

Nếu đúng thì k cho mk nha