Question

tìm x ∈N biết

5^x+1 . 10=1250

Answer 1

5^x + 1 .10 = 1250

=> 5^x + 1 = 1250 : 10 = 125

=> 5⁵ = 125

=> x = 5 

Answer 2

\(5^{x+1}.10=1250\Rightarrow5^{x+1}=125=5^3\)

=>x+1=3

=>x=2

Answer 3

\(5^{x+1}.10=1250\)

\(\Rightarrow5^{x+1}=1250:10\)

\(\Rightarrow5^{x+1}=125\)

\(\Rightarrow5^{x+1}=5^3\)

\(\Rightarrow x+1=3\)

\(\Rightarrow x=3-1\)

\(\Rightarrow x=2\)

Answer 4

\(5^x+1.10=1250\)

\(=>5^x+1=125\)

Khó à nha đề sai rồi nếu \(5^5=125\)

thì \(125+1\ne125\)

Đề sai rùi

Answer 5

5^x+1.10=1250

5^x+1=1250:10

5^x+1=125

5^x+1=5³

​​​​​​Suy ra x+1=3 nên x=2

Vậy x=2

Answer 6

\(5^{x+1}.10=1250\)

\(=>5^{x+1}=125\)

\(=>x=4\)

sorry nha mik đọc ko kĩ đề 

T nha 

Answer 7

5^{x + 1} + 1 x 10 = 1250 

5^{x + 1} + 10= 1250 

5x + 1          = 1250 : 10 

5^{x + 1}           = 125

5^{x + 1}           = 5³

=> x + 1 = 3 

=> x = 3 - 1 

=> x = 2

Vậy x = 2 

Answer 8

5^x+1=1250:10

5^x+1=125

5^x+1=5^3

Vayx=2