Question

[Út Nhỏ Jenny]

tìm số nguyên x, nếu biết:

\(5^{x+4}-3.5^{x+3}=2.5^{11}\)

Ai nhanh mik tick cho 3 cái luôn hứa đó

Answer 1

[Anh Trần]

=>5^x+3(5-3)=2.5¹¹

=>5^x+3=5¹¹

=>x+3=11

=>x=8

Answer 2

[o0o I am a studious person o0o]

\(5^{x+4}-3.5^{x+3}=2.5^{11}\)

\(\Rightarrow5^{x+3}\left(5-3\right)=2.5^{11}\)

\(\Rightarrow5^{x+3}=5^{11}\)

\(\Rightarrow x+3=11\)

\(\Rightarrow x=8\)