Question

tìm x 

5 mũ x+3 - 13 = 612 

ai nhanh mình tick , cần lắmmmmm

Answer 1

5^x+3 - 13 = 612

<=> 5^x+3  = 625

<=> 5^x+3 = 5⁴

<=> x + 3 = 4

<=> x = 1

Answer 2

\(5^x+3-13=162\)

\(\Rightarrow5^x+3=162+13\)

\(\Rightarrow5^x+3=175\)

\(\Rightarrow5^x=175-3\)

\(\Rightarrow5^x=172\)

\(\Rightarrow x\in\varnothing\)

Answer 3

5^x+3 - 13 = 612

5^x+3 = 625

5^x+3 = 5⁴

=> x + 3 = 4

x = 1

Answer 4

\(5^{x+3}-13=612\)      

\(5^{x+3}=625\)

\(5^{x+3}=5^4\)

\(x+3=4\)

\(x=1\)

Chúc em học tốt.

Answer 5

\(5^{x+3}-13=612\)

\(5^{x+3}=612+13\)

\(5^{x+3}=625\)

\(5^{x+3}=5^4\)

\(x=4-3\)

\(x=1\)

VẬY X=1